Eye Pathophysiology.pdf
Eye Pathophysiology
| Complete Exam Study
Guide, Practice Questions,
Answers & ATI Review
Material
, Eye Pathophysiology
Eye Pathophysiology.pdf
Study online at https://quizlet.com/_hynph2
1. Three layers of 1. Fibrous tunic - sclera, cornea 2. Vascular tunic - choroid, ciliary body, iris 3.
the eye Nervous tunic - retina
2. Cornea function Refracts light entering the eye
3. Sclera function Protects and maintains shape of the eyeball
4. Choroid function Provides blood supply and absorbs stray light
5. Iris function Controls pupil size; radial fibers dilate (sympathetic), circular fibers constrict
(parasympathetic)
6. Ciliary body func- Produces aqueous humor; controls lens shape; responsible for accommodation
tion
7. Lens function Refracts light to focus on retina; image is inverted and reversed
8. Retina features Contains rods and cones; includes optic disc (blind spot), macula, and fovea
centralis
9. Aqueous humor Maintains intraocular pressure and provides nutrients to lens/cornea
function
10. Vitreous humor Gel-like substance maintaining eyeball shape and preventing collapse
function
11. Image formation Light passes through pupil ’focuses on retina ’image inverted and reversed ’signal
process via CN II to occipital lobe ’pupil response via CN III
12. Optic disc Area where optic nerve exits; contains no photoreceptors ’blind spot
13. Strabismus Any ocular misalignment; may cause amblyopia, entropia/exotropia, diplopia
14. Nystagmus Involuntary rhythmic movement; types: Pendular (regular), Jerk (fast phase)
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Eye Pathophysiology
| Complete Exam Study
Guide, Practice Questions,
Answers & ATI Review
Material
, Eye Pathophysiology
Eye Pathophysiology.pdf
Study online at https://quizlet.com/_hynph2
1. Three layers of 1. Fibrous tunic - sclera, cornea 2. Vascular tunic - choroid, ciliary body, iris 3.
the eye Nervous tunic - retina
2. Cornea function Refracts light entering the eye
3. Sclera function Protects and maintains shape of the eyeball
4. Choroid function Provides blood supply and absorbs stray light
5. Iris function Controls pupil size; radial fibers dilate (sympathetic), circular fibers constrict
(parasympathetic)
6. Ciliary body func- Produces aqueous humor; controls lens shape; responsible for accommodation
tion
7. Lens function Refracts light to focus on retina; image is inverted and reversed
8. Retina features Contains rods and cones; includes optic disc (blind spot), macula, and fovea
centralis
9. Aqueous humor Maintains intraocular pressure and provides nutrients to lens/cornea
function
10. Vitreous humor Gel-like substance maintaining eyeball shape and preventing collapse
function
11. Image formation Light passes through pupil ’focuses on retina ’image inverted and reversed ’signal
process via CN II to occipital lobe ’pupil response via CN III
12. Optic disc Area where optic nerve exits; contains no photoreceptors ’blind spot
13. Strabismus Any ocular misalignment; may cause amblyopia, entropia/exotropia, diplopia
14. Nystagmus Involuntary rhythmic movement; types: Pendular (regular), Jerk (fast phase)
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