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The only eye care professional who is a medical doctor is the
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Optometrist
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Ocularist
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Ophthalmologist
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Orthoptist
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A patient in need of a prosthetic eye would be referred to an
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Ocularist
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Optician
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Orthoptist
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Optometrist
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Of the following, the eye care professional who routinely fills prescriptions for eyeglasses is the
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An ophthalmologist who concentrates on one area of the eye or focuses on a specific ocular disease is called
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An optician
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An ocularist
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An optometrist
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A subspecialist
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The level directly above certified ophthalmic medical assistant on JCAHPO'S certification ladder is
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Certified ophthalmic medical technologist
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Certified ophthalmic registered nurse
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Certified ophthalmic technician
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Certified ophthalmic photographer
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Of the following, the responsibility that routinely falls to the ophthalmic medical assistant is
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Diagnosing certain conditions
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Making prognostic estimates
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Performing certain diagnostic tests
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Prescribing treatment for certain problems
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An ophthalmic medical assistant accidentally administers too many eyedrops to a patient's eye. The first action the assistant should take is to
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Apologize to the patient and thoroughly wash with water
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Explain to the patient that the effects will be intensified
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Tell the ophthalmologist, who will then decide how to handle the situation
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Suggest that the patient remain in the office for awhile after the examination
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While waiting for the ophthalmologist, an anxious patient asks the Ophthalmic Medical Assistant for the results of a recent test. The assistant should
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Explain that the ophthalmologist will discuss the results with the patient shortly
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Discuss the results with the patient to reduce the level of anxiety
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Reassure the patient that all is well and that the condition tested for is not serious
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Politely tell the patient that another patient requires attention and leave the room
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An ophthalmologist's office may disclose information regarding a patient's condition only when the individual seeking the information
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Is the patients spouse
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Has received permission from the patient
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Is the patient's employer
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Is a member of the patient's immediate family
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Of the following, the structure that is part of the ocular adnexa is the
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Cornea
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Eyelid
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Lens
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Optic nerve
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The medial rectus muscle rotates the eyes
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Inward towards the nose
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Outward towards the temple
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Downward and outward toward the temple
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Downward and inward toward the nose
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The membrane that lines the inner eyelid is the
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Bulbar conjuntiva
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Epithelium
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Palpebral conjunctiva
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Tarsus
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The tough, transparent membrane that provides about two thirds of the eye's focusing power is the
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Retina
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Conjunctiva
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Sclera
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Cornea
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The white tissue surroundind the cornea and forming the main structural component of the globe is the
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Cilisry body
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Limbus
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Sclera
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Vitreous
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The structures of the uveal tract, or uvea, are
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Iris, ciliary body, choroid
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Iris, posterior chamber, ciliary body
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Choroid, sclera, retina
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Iris, lens, choroid
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The clear, transparent fluid that fills the anterior chamber is called the
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Vitreous
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Aqueous humor
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Choroid
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Tear film
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The condition occurring most often in individuals over age 45 in which the lens can no longer change shape to focus at the near is
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Accomodation
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Presbyopia
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Glaucoma
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Cataract
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The primary function of the sphincter and dilator muscles is to
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Control the amount of light entering the inner part of the eye
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Raise and lower the eyelid
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Determine the direction and movement of the eyeball
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Change the curvature of the lens
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In this figure of the lacrimal system, the structures are correctly identified as
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(1) lacrimal sac (2) punctum (3) lacrimal gland
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(1) lacrimal sac (2) nasolacrimal duct (3) lacrimal gland
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(1) lacrimal gland (2) punctum (3) lacrimal sac
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(1) lacrimal gland (2) lacrimal sac (3) punctum
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Under normal conditions, aqueous fluid leaves the eye in the sequence
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Trabecular meshwork, through the canal of Schlemm, to the anterior chamber angle
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Canal of Schlemm, through the trabecular meshwork, to the surface blood vessels
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Anterior chamber angle, through trabecular meshwork, to canal Schlemm
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Anterior chamber angle, through surface blood vessels, to trabecular meshwork
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Injury or degeneration of the macula will most likely result in loss of
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In this figure of the visual pathway, the structures are correctly identified as
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(1) visual cortex (2) optic tract (3) optic nerve
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(1) optic nerve (2) optic chiasm (3) genticulate body
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(1) optic chiasm (2) optic tract (3) genticulate body
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(1) optic nerve (2) optic chiasm (3) visual cortex
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The suffix -itis added to the name of a tissue or organ produces the medical term for
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Infection
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Inflammation
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Ischemia
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Degeneration
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A body part deprived of its normal blood supply due to blockage or breakage of a vessel is said to be
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Inflamed
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Infected
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Ischemic
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Neoplastic
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Diabetes Mellitus is an example of the type of disease process called
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Metabolic
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infectious
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Neoplastic
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Degenerative
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An abnormal change observed by a physician while examining a patient is referred to as
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An etiology
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A symptom
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A sign
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A syndrome
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When the orbital contents swell, pushing the eyeball forward, the resulting condition is termed
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Blepharitis
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Exophthalmos
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Ectropion
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Exotropia
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The term diplopia is used to describe
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Treatment of congenital strabismus may include surgery of the
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Cornea
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Eyelid
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Retina
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Eye muscles
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Inward deviation of an eye that occurs only when the eye is covered is called
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Esophoria
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Esotropia
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Exophoria
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Exotropia
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Amblyopia referd to
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The continual movement of the eyes from side to side and up and down
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The suppression of visual images from a deviating eye
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The abnormal drooping of an upper eyelid
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Three-dimensional visual perception
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The term chalazion describes
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An inward turning of the eyelashes
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A drooping upper eyelid
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An inflammation of the lacrimal sac
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A lump that develops after inflammation and infection of the meibomian glands
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A condition of dry eyes is called
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Primary open-angle glaucoma
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Is not a threat to vision
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Can cause permanent damage to the optic nerve
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Develops rapidly and suddenly
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Accounts for a small percentage of all glaucomas
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A clouding of the vitreous gel
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A benign growth on the conjunctiva
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A branch-shaped corneal ulcet
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An opacification of the crystalline lens
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The apperance of flashes of light in the corner of the eye followed by a sensation of a curtain moving across the vision are symptoms of
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Substances that permit the passage of light without significant disruption are termed
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Opaque
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Transparent
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Translucent
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Electromagnetic
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A convex lens with a focal length of 0.50 meter has a power of
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A toric cornea is characteristic of
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Hyperopia
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Myopia
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Presbyopia
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Astigmatism
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The type of lens that best corrects myopia combined with astigmatism is a
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Cylindrical lens
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Spherical lens
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Spherocylindrical lens
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Multifocal lens
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The difference between the power of the upper segment and the power of the lower segment in a bifocal lens is referred
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The correct transposition of the plus-cylinder prescription +1.00+2.00×90
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+3.00-2.00×90
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+1.00-2.00×180
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+3.00-2.00×180
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+2.00-1.00×90
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The term neutralization in retinoscopy refers to
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Administering cycloplegic eyedrops, which block accomodation
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Finding the lens power that affects movement of the retinal reflex and fills thd pupil with light
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Measuring the prescription of the patient's exisiting eyeglasses
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Balancing the correction of both the patient's eyes
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If the distance portion of an eyeglass lens is +2.00 and the bifocal add is +1.00, then the bifocal power is
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The first step in performing manual lensometry or keratometry is to
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Focus the eyepiece
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Lubricate the instrument
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Position the eyeglasses
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Position the patient
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If the lensmeter mires cannot be centered in the central portion of the lensmeter target, the lens probably contains a
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Sphere
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Cylinder
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Spherocylinder
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Prism
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The part of the comprehensive medical eye examination during which the visible parts of the lacrimal apparatus are inspected is
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Healthy, asymptomatic individuals between the ages of 40 & 64 should have a comprehensive medical eye exam every
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6 months
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Year
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2-4 years
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5 years
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When recording the patient's chief complaint, the opbthalmic medical assistant should
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Include an evaluation of the patient's words
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Include only the facts as stated by the patient
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Substitute technical terms for the patient's words
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Include any diagnoses that seem likely
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Close examination of the lids, lashes, cornea, and lens can be accomplished with the
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Biomicroscope
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Ophthalmoscope
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Gonioscope
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Exophthalmometer
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In the snellen acuity recording 20/200, the number 100 represents
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Size of the largest optotype seen by the patient
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Distance in feet from the patient to the chart
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Distance in meters from the patient to the chart
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Distance in feet at which a normal eye can see the particular line on the chart
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If a pinhole acuity test is found to significantly improve a patient's poor visual acuity, the patient probably has
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Glaucoma
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A cataract
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Poor peripheral vision
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A refractive error
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Jaeger notations, snellen M units, and distance equivalents are various units of measuring
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Near visual acuity
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Ocular motility
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Peripheral vision
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Pupil width
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Having a patient follow a finger in the six cardinal positions of gaze is a method of evaluating
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The prism and alternate cover test is used to
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Evaluate depth perception
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Evaluate peripheral vision
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Measure deviation in a misaligned eye
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Measure near visual acuity
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Of the following, the procedure that mistbe performed before pupillary dilation is
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Cycloplegic refraction
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Biomicroscope
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Ophthalmoscopy
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The swinging-light test
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In a normal consensual reaction, when a light is directed into the pupil of one eye, the pupil of the other eye
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Constricts
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Dilates
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Is unchanged
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Pulsates
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Of the following, the test that evaluates disturbances or defects in the visual field is the
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Worth four-dot test
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Titmus stereopsis test
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Schirmer test
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Amsler grid test
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Intraocular pressure is measured by flattening a small area of the central cornea in
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Keratometry
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Applanation tonometry
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Indentation tonometry
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Schiøtz tonometry
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A reading of 3 on the Goldmann tonometer dial indicates an intraocularpressure of
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0.3 mm Hg
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3 mm Hg
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15 mm Hg
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30 mm Hg
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Gonioscopy is a procedure used to view the
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Indirect ophthalmoscopy provides a
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Nonmagnified view of the fundus
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15-fold magnified view of the fundus
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Wider field of view of the fundus than does direct ophthalmoscopy
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Narrower field of view of the fundus than does direct ophthalmoscopy
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The three transparent structures that compose what is termed the ocular media are the
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Cornea, lens, and retina
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Conjunctiva, cornea, and lens
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Cornea, lens, and vitreous
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Lens, vitreous, and aqueous humor
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The interferometer measures visual acuity potential by using a laser or special light beams to
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Project parallel lines onto the macula
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Photograph the cornea's endothelial cells
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Project a lighted Snellen chart onto the retina
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Deliver radiating sound waves throughout the cornea
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Pachymetry is useful in determining the
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Position and size of tumors in the eye
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Macular function in a patient with a media opacity
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Degree of a patient's sensitivity to glare
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Ability of the cornea to withstand the stress of surgery
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Of the following, the procedure used for counting endothelial cells of the cornea is
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An acuity chart printed in faint gray instead of sharp black on white is useful for measuring
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Near visual acuity
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Glare sensitivity
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Color vision
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Contrast sensitivity
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Fluoroscein angiography is a valuable method of detecting and documenting
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Abnormalities in the structures of the outer eye
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Corneal endothelial cells
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Abnormalities in ocular blood vessels
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Lens opacities
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Of the following, the procedure most useful in calculating the power of an artificial lens to be implanted in a patient who has undergona cataract extraction is
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A-scan ultrasonography
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B-scan ultrasonography
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Fluorescein angiography
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Specular microscopy
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The printed circles on a visual field chart refer to the
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Radial meridians
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Boundaries of a normal patient's island of vision
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Eccentricity from fixation at 10° intervals
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Holes within the contour of an otherwise normal visual field
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On a visual field chart, a contour obtained with a single target of a particular size and brightness is
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A shallow scotoma
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An absolute scotoma
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An isopter
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A circle of eccentricity
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Generally, the 0° point on visual field charts of both the right and the left eye is located at the
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Extreme right on the horizontal meridian, and the other meridians are measured progressively in a clockwise direction
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Extreme left on the horizontal meridian, and the other meridians are measured progressively in a clockwise direction
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Extreme right on the horizontal meridian, and the other meridians are measured progressively in a counterclockwise direction
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Top of the vertical meridian, and the other meridians are measured progressively in a counterclockwise motion
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A defect in the inferior temporal retina will affect the
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Inferior temporal field of vision
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Inferior nasal field of vision
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Superior temporal field of vision
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Superior nasal field of vision
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On visual field charts, the physiologic blind spot appears in the
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Two examples of static perimetry are
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The tangent screen test and the contrast sensitivity test
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Suprathreshold perimetry and Autoplot perimetry
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The tangent screen test and Goldmann perimetry
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Threshold perimetry and suprathreshold perimetry
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The technique of placing a target of a given size in the visual field and gradually increasing its brightness until the patient sees it is the basis for
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Threshold perimetry
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Suprathreshold perimetry
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The tangent screen test
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Goldmann perimetry
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One disadvantage of Goldmann periimetry is that it
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Covers only the central 30° of the visual field
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Requires the examiner to move the target at the same speed in each direction
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Provides no means of controlling the brightness of the test targets
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Produces printed results that are difficult to plot and interpret
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One advantage of computerized threshold perimetry is that it
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Is quicker and easier to perform than kinetic perimetry
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Is more sensitive in detecting shallow defects than kinetic perimetry
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Eliminates the need for the technician to be in the room
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Eliminates the need for patient response
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This figure illustrates the
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Light divergent property of a convex lens
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Light divergent property of a concave lens
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Light convergent property of a convex lens
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Light convergent property of a concave lens
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This figure shows the focal point of light rays in an eye that is
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Myopic
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Presbyopic
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Emmetropic
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Hyperopic
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In this visual field chat of the right eye, the arrow on the left points to an area of decreased visual sensitivity known as a
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Physiologic blind spot
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Scotoma
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Depression
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Hemianopia
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In this visual field chart of both eyes, the condition depicted is most often due to
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For accurate perimetry, the patient's near correction must be in place if the patient
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Correction for distance, near, and intermediate vision in one lens can be achieved with
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An executive bifocal lens
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A round-top segment bifocal lens
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A single vision lens
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A double-D segment trifocal lens
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Transitional zones or areas of blending that create distorted or blurred vision are a particular drawback of
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Round-top multifocal lenses
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Conventional seamed multifocal lenses
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Progressive-addition multifocal lenses
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Polarized lenses
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Because of its resistance to shattering , the material choice for safety glasses is
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Interpupillary distance is measured principally to determine
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The base curve of a lens
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The optical center of a lens
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Thecpantoscopic angle of a lens frame
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The segment height of a multifocal lens
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Interpupillary distance is measured principally to determine
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The base curve of a lens
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The optical center of a lens
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The pantoscopic angle of a lens frame
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The segment height of a multifocal lens
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The procedure for obtaining monocular interpupillary distance involves measuring the distance from
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One pupil to the other in a single measurement
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One pupil to the other in a single measurement and then dividing the results by 2
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One pupil to the bridge of the nose and then multiplying the result by 2
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Each pupil to the bridge of the nose separately and then adding the results
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The accurate measurement of vertex distance during refractometry is required
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For all refractive prescriptions
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Only for multifocal prescriptions
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Only for prescriptions with corrections greater than or equal to -5 to +5 diopters
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Only for prescriptions with corrections less than or equal to -5 to +5 diopters
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As a starting point, most opticians recommend fitting the top of a bifocal segment
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Level with the upper lid margin
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Level with the lower lid margin
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Level with the lower rim of the pupil
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Exactly at the middle of the eyeglass lens
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The primary purpose of triage is to
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Obtain the patient's complete ophthalmic history
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Diagnose the patient's problem
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Classify the patient's chief complaint according to its severity and urgency
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Schedule office appointments acording to the availability of the physician
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If the ophthalmic medical assistant notices a discrepancy between the patient's report of a traumatic injury and the injury itself, the assistant should
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Confront the injured patient immediately
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Inform the ophthalmologist in private, without the patient present
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Inform the ophthalmologist in the presence of the patient
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Disregard the discrepancy, as this matter is not the responsibility of the ophthalmic medical assistant
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Of the following, the situation that should be treated as an emergency requiring immediate action is a
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Recent onset of flashes of light
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Loss of contact lenses needed for work
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Mucous discharge from the eye
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Sudden, painless, severe loss of vision
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Generally, urgent situations are those requiring that the patient be seen within
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3 to 6 hours
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24 to 48 hours
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5 to 7 days
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1 to 2 weeks
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A patient telephones the ophthalmologist's office reporting an alkali burn to the eye. The ophthalmic assistant should instruct the patient to
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Patch the eye and proceed immediately to the office or emergency facility
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Keep the eye closed and proced immediately to the office or emergency facility
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Irrigate the eye with water for 20 minutes and then proceed to the office or emergency facility
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Put a lubricating ointment on the eye and proceed immediately to the office or emergecy facility
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When assisting a patient who feels faint in the office, the ophthalmic kedical assistant should first
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In encounters with irate or hostile patients, the best approach an ophthalmic medical assistant can take is to
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Recommend that they see anothe physician
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Try to convince them that they are being unreasonable
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Listen calmly to their complaints and apologize for any misunderstanding
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Ignore them until they calm down
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When interacting with a visually impaired or blind patient, the ophthalmic medical assistant should
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Approach quietly to avoid startling the patient
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Speak through an accompanying companion
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Speak loudly to ensure comprehension
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Face the patient and say the patient's name
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A papoose board is useful in
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Propping up a toddler at the slit lamp
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Immobilizing an infant during an ophthalmic evaluation
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Transporting a toddler from one examining room to another
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Testing visual acuity in a school-aged child who cannot identify letters
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The "fix and follow" method of evaluating visual function is generally used with
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Infants
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School-aged children
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Elderly patients
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Patients with low vision
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A patient with insulin dependent diabetes suddenly becomes sweaty, dizzy, and disoriented while waiting to see the ophthalmologist. The assistant, acting in compliance with the office's emergency procedures, should first
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Reschedule the appointment and send the patient home
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Have the patient lie down until the episode passes
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Give the patient fruit juice or candy to stabilize the blood sugar level
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Have the patient drink one or two glasses pf water
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When testing visual acuity in elderly patients, the ophthalmic medical assistant should
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Concentrate on distance acuity, as near acuity is not as important in this age group
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Require that these patients respond quickly, so that an objective measurement can be obtained
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Adjust the lighting to avoid glare, which often is a problem in this age group
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Use the Allen chart rather than the Snellen chart when testing visual acuity
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Approximately 95% of all individuals over the age of 65 havr some degree of
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Glaucoma
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Cataract
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Diabetes
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Diplopia
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When the ophthalmic medical assistant schedules a lengthy appointment for a patient with IDDM, the most appropriate recommendation to make to the patient is to
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Fast for several hours before the appointment
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Come in right before lunch
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Come in right after breakfast or lunch
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Eat lightly on the day of the appointment
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When the ophthalmic medical assistant asks a literate 8 year old patient to read the visual acuity chart, the child begins reciting the alphabet. The most effective action the assistant can take to get the results needed is to
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Praise the child for trying hard to cooperate
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Ask the parent to get the child started reading the chart
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Ask the child to start at the beginning of the chart and read each letter separately
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Move the child closer to the chart
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One disadvantage of ophthalmic medicinal ointments is that they
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May cause unwanted effects in other parts of the body
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May blur vision when applied
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Cannot be used in patients with excessive tearing
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Do not remain in contact with the eye surface for very long
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Of the following, the type of injection classified as a form of systemic drug delivery is the
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Intravitreal
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Subconjunctival
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Subcutaneous
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Retrobulbar
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When instilling eyedrops, the ophthalmic medical assistant should
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Administer the medication directly to the cornea
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Make certain the dropper makes contact with the conjunctival sac
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Administer the medication directly into the conjunctival sac
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Apply direct pressure to the eyelids
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Of the following, the drug that is most helpful when performing both a fundus examination and an objective refraction on a pediatric patient is
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An anesthetic
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A miotic
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A mydriatic
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A cycloplegic
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The two types of drugs that could stimulate an attack of angle closure glaucoma in patients with narrow anterior chamber angles are
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Mydriatics and cycoplegics
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Mydriatics and antihistimines
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Anesthetics and dyes
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Antiallergic and anti inflammatory agents
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In ophthalmology, topical anesthetics are most often used to
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Perform major eye surgery
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Treat corneal defects on a long-term basis
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Relieve minor eye fatigue and redness
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Prevent discomfort during diagnostic procedures
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Miotics function to reduce the intraocular pressure by
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Decreasing the production of aqueous humor
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Contracting the ciliary body muscle and opening the outflow channels for aqueous humor
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Paralyzing the ciliary body muscle and closing the anterior chamber angle
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Dilatinf the pupil and opening the anterior chamber angle
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All of the following are used to treat bacterial infections except
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Neomycin
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Sulfonamides
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Nystatin
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Bacitracin
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The topical drug phenylephrine is classified as
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A miotic
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A mydriatic
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An anesthetic
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An antimicrobial
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The ophthalmologist has written that includes the abbreviations "gtt" and "bid." These indicate that the prescribed drug is
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An ointment to be administered every hour
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An ointment to be administered at bed time
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Topical drops to be administered 4 times a day
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Topical drops to be administered twice a day
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Topical corticosteroids function primarily as
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Lubricants, which keep the external eye moist and maintain tear film balance
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Antimicrobials, which inhibit the growth of bacteria, viruses, or fungi
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Irrigating solutions, which flush out the eye during surgical procedures
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Anti-inflammatory and anti-allergic agents, which reduce swelling and scarring of the lids and anterior segment
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A common side effect of cycloplegics is
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Eye redness
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Blurred vision
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High blood pressure
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Corneal edema
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The microbe most likely to cause recurrent fever blisters is
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Adenovirus
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Cytomegalovirus
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Epstein-Barr virus
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Herpesvirus
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A corneal abrasion caused by a tree twig is most likely to cause a
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Fungal infection
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Protozoal infection
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Viral infection
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Chlamydial infection
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Of the following, the people most at risk for developing an ocular infection by the protozoan Acanthamoeba are those who
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Eat undercooked or raw meat
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Use homemade salt solutions to clean their contact lenses
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Have had chickenpox during childhood
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Use contaminated cosmetics
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The primary purpose of standard precautions is to
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Identify disease-causing microbes
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Reduce the opportunity for harmful microbes to flourish and threaten patients and medical personnel
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Protect the sterility of a sterilized article
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Destroy all the microorganisms in the office environment
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A tonometer tip is best disinfected by using
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Boiling water
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Moist heat
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A germicide
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Soap and water
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Sterilization is best defined as
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The transmission of infectious microbes from reservoir to host
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The range of procedures used to prevent the spread of infectious microbes in the office
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The process of inactivating or eliminating most disease-causing microorganisms
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The destruction of all microorganisms
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An autoclave is used to
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Disinfect medical amterials that would be destroyed by dry or moist heat
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Sterilize medical materials by means of pressurized moist heat
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Sterilize medical materials by means of dry heat
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Decontaminate reusable medical materials before they are sterilized
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If the ophthalmic medical assistant accidentally touches the sterile functional surface of a disposable instrument
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Resterilized in the office
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Wiped with alcohol
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Wiped with a sterile cloth
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Discarded, no matter what it's cost
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An infection caused when the eye has been penetrated by a contaminated metal fragment is an example of
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Direct-contact transmission
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Indirect-contact transmission
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Common-vehicle transmission
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Vector transmission
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Ophthalmic medical assistants with open cuts on their hands
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Should wear gloves to protect patients
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Should wear gloves to protect themselves
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Should wear gloves to protect patients and themselves
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Do not need to wear gloves if they wash their hands before and after working with patients
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Of the following, the task that is the responsibility of the ophthalmic assistant when caring for a patient undergoing minor surgery is
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Initiating the discussion of informed consent
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Prepping the patient for the procedure
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Administering a local anesthetic by injection
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Determining when the patient is steady enough to leave the office
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The discussion involved in obtaining informed consent
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Is necessary only before a major surgical procedure
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Occurs between the patient and the ophthalmic medical assistant
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Covers the benefits as well as the risks of the procedure
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Is conducted mainly for the protection of the surgeon
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Of the following, the suture material that is not broken down by the body but must be removed from the suture site is
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Polypropylene
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Collagen
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Gut
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Polyglactin 910
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The rhumboid-shaped needle point used in procedures involving the cornea or sclera where the plane of penetration must be precise is
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Cutting point
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Reverse-cutting
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Spatula point
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Taper point
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In this photograph, the surgical instruments are correctly identified from left to right as
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Scissors, forceps, needle holder
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Forceps, scissors, needle holder
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Needle holder, forceps, scissors
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Forceps, needle holder, scissors
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To maintain hemostasis during a surgical procedure, the surgeon uses
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Curettes
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Cannulas
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Clamps
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Forceps
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In lacrimal-system probing, a cannula is used to
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Enlarge the small punctal opening
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Scoop out the unwanted tissue
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Hold the suture needle steady
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Flush out a tear duct with an irrigating solution
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All of the following are considered to be within the sterile operating field except
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The instrument tray
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Masks
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Gloves
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Drapes
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Prepping the patient is usually done
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After final scrubbing and without sterile gloves
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Before final scrubbing and without sterile gloves
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After final scrubbing and with non sterile gloves
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Before final scrubbing and with sterile gloves
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Of the following, the suture size least likely to be used for eye surgery is
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The contact lens that allows oxygen to reach the cornea only through the tear pump are
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A prescription for contact lenses
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Is identical to that for eyeglasses
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Requires only keratometry and refraction measurements
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Includes both keratometry and base curve measurements
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Includes vertex and interpupillary distance measurements
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One significant advantage of soft lenses as compared to rigid gas-permeable lenses is that soft lenses
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Generally are easier to handle, clean, and disinfect
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Can correct large amounts of astigmatism or irregular corneas more effectively
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Generally are easier to adapt to and initially more comfortable to wear
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Can be modified after manufacture
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An allergic reaction related to contact lens wear is most often due to individuals sensitivity to a
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Soft contact lens material
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Rigid contact lens material, such as silicon acrylate
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Soap used to wash hands before insertion
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Preservative or disinfectant chemical in a lens solution
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Cosmetic restorative lenses are most appropriate for patients who
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Want to enhance or change the color of their irises
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Have disfigured eyes
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Require relief from photophobia or glare sensitivity
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Have large amounts of astigmatism that would otherwise require thick glasses
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Disinfection of contact lenses serves primariky to
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Remove surface protein deposits
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Keep the lens surface hydrophilic
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Prevent the growth of bacteria, viruses, and fungi
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Lubricate the area between the cornea and the lens
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Contact lenses are most likely to be contraindicated in individuals who
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Have refractive errors resulting from keratoconus
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Work in occupations requiring excellent peripheral vision
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Participate heavily in sports activities
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Are routinely exposed to excessive amounts of fumes or dust
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Generally, when inserting a soft contact lens on a patient, the ophthalmic medical assistant should first place the lens on the
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A corneal abrasion caused by foreign material lodged between the cornea and the contact lens
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Can result in a serious corneal infection
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Usually is more painful in soft lens wearers than in rigid lens wearers
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Usually requires no treatment beyond removal of the lens for a few days
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Always requires treatment with a pressure patch
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The onky acceptable rinsing solution for contact lenses is
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Salt tablets dissolved in distilled water
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Salt tablets dissolved in tap water
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The contact lens user's own saliva
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Sterile saline solution