Structure of the Human Eye

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término English
definición English

The white part of the eye that surround the eyeball and helps maintain it's shape. It has tiny blood vessels

A transparent lens covering the eye

lacrimal glands
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the gland that produces tears and located in the backside of the upper eye

Ether blue or brown- made up of cirucular muscles used to make the pupil smaller in bright light and larger in dim light

Dark circular opening in the center of the iris

ciliary muscles
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a ring of delicate fibers used the hold the lens in place

aqueous humor
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behind the cornea

behind the iris, a clear convex disk that helps the cornea focus light coming into the eye

vitreous humor
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clear jelly like sphere that holds the internal structure of the eye in place and maintains the shape of the eye

a translucent layer of tissue in the back of the eye, forms images and sends to the brain for processing

the pigmented vascular layer of the eyeball between the retina and the sclera

an oval yellowish area surrounding the fovea near the centre of the retina in the eye, which is the region of keenest vision

a small depression in the retina of the eye where visual acuity is highest. The centre of the field of vision is focused in this region, where retinal cones are particularly concentrated

the raised disc on the retina at the point of entry of the optic nerve, lacking visual receptors and so creating a blind spot.

the point of entry of the optic nerve on the retina, insensitive to light.

optic nerve
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each of the second pair of cranial nerves, transmitting impulses to the brain from the retina at the back of the eye.

Optic chaism
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Joins the optic nerve to the eyes, where nerve fibers cross

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