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, Pathophysiology Eye
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1. what are the three layers of the eye sclera
wall? choroid
retina
2. what is the function of sclera? protects and stabilizes eye
3. what is the cornea? transparent central anterior part of the sclera
that refracts light
4. T/F: cornea has vasculature? false
5. what is choroid? deeply pigmented middle layer of the eye wall
6. what is the function of the choroid? prevents light from scattering inside the eye
7. what structure is the iris a part of? choroid
8. what is the iris? pigmented diaphragm with central opening
(pupil)
9. what is the function of the iris? regulate the amount of light on the retina by
constricting/dilating pupil
10. what is the outer layer of the retina? pigmented epithelial cells
11. what is the inner layer of the retina? where photoreceptors are located
12. what is the function of photoreceptors? convert light energy into nerve impulses
13. what is the function of rods? peripheral and dim light vision
14. where are rods most densely located? periphery of the retina
15. what is the function of cones? color and detail receptors
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