Parts of the eye

What part of the eye is this?

What part of the eye is this?

What part of the eye is this?

What part of the eye is this?

What part of the eye is this?

What part of the eye is this?

What part of the eye is this?

What part of the eye is this?

What part of the eye is this?

What part of the eye is this?

What part of the eye is this?

The retina is a layer of [blank_start]light-sensitive[blank_end] cells at the [blank_start]back[blank_end] of the eye. The retina detects [blank_start]images[blank_end] focused by the [blank_start]cornea[blank_end] and the [blank_start]lens[blank_end]. The retina is connected to the [blank_start]brain[blank_end] by the optic nerve.

The cornea is a [blank_start]tough, clear[blank_end] covering over the [blank_start]iris and the pupil[blank_end] that helps [blank_start]protect[blank_end] the eye. Light [blank_start]bends[blank_end] as it passes through the cornea. The cornea begins bending light to make an [blank_start]image[blank_end]; the [blank_start]lens[blank_end] finishes the job.

The pupil is the [blank_start]dark[blank_end] circle in the center of your [blank_start]iris[blank_end]. It's a hole that lets [blank_start]light[blank_end] into the [blank_start]inner[blank_end] eye. Your pupil is [blank_start]round[blank_end]. A cow's pupil is [blank_start]oval[blank_end].

The aqueous humor is a [blank_start]clear[blank_end] fluid that helps the cornea keep its [blank_start]rounded[blank_end] shape

The iris is a [blank_start]muscle[blank_end] that controls how much [blank_start]light[blank_end] enters the eye. It is suspended between the [blank_start]cornea[blank_end] and the [blank_start]lens[blank_end]. A cow's iris is [blank_start]brown[blank_end], but a human's iris varies in [blank_start]colou[blank_end]r.

The lens is a [blank_start]clear, flexible[blank_end] structure that makes an [blank_start]image[blank_end] on the eye's [blank_start]retina[blank_end]. The lens in [blank_start]flexible[blank_end] so that it can change shape, [blank_start]focusing[blank_end] on objects at different distances.

The vitreous humor is a [blank_start]thick[blank_end], clear jelly that helps give the eyeball its [blank_start]shape[blank_end]

The sclera is a [blank_start]thick[blank_end], [blank_start]tough[blank_end], [blank_start]white[blank_end] outer covering of the eyeball

The tapetum is the [blank_start]colourful[blank_end], shiny material located behind the [blank_start]retina[blank_end]. Found in animals with good [blank_start]night vision[blank_end], the tapetum [blank_start]reflects[blank_end] light back through the [blank_start]retina[blank_end].

The optic nerve is a bundle of [blank_start]nerve fivers[blank_end] that carry information from the [blank_start]retina[blank_end] to the [blank_start]brain[blank_end].

The blind spot is the place where all nerves from the [blank_start]retina[blank_end] join to form the [blank_start]optic nerve[blank_end]. Each eye has a blind spot where there are no [blank_start]light-sensitive[blank_end] cells.

Cones are one kind of [blank_start]light-sensitive[blank_end] cells in the retina. Cones give you [blank_start]colour vision[blank_end] in [blank_start]bright[blank_end] light.

Rods are one kind of [blank_start]light-sensitive[blank_end] cells in the retina. Rods respond to [blank_start]dim[blank_end] light.