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20 Cards in this Set
- Front
- Back
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Which eyelid has more mybomium glands?
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The upper (40 vs. 20).
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Where do sebaceous cancers occur and where do basal/squamous cell carcinomas occur?
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Upper eyelid, lower eyelid.
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What stem cells regenerate damaged cornea?
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libal stem cells.
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Where is most of our vision centered?
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macula.
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What encompasses refractive errors of the eye?
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a) length of the eye (myopic vs. hyperopic)
b) corneal curvature c) thickness of the lens |
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What is stigmatism?
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oval shape of the lens.
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What are the five layers of the cornea?
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epithelial, Bowman's, XXX, stroma, endothelial.
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What is an abrasion of the eye?
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When all layers of the corneal epithelium are debrided.
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What produces the aqueous fluid?
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Ciliary body
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What occurs in macular degeneration?
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An opening through retinal pigment epithelium causes VEGF secretion and blood vessel recruitment which then leaks blood into the vitreous.
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What does the abnormal pupil localize the lesion to?
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The optic nerve.
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Visual field defects in the brain obey the quadrants of vision.
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notes
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Remember that the visual field of the lateral parts of the retina does not cross the optic chiasm.
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notes
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What three cranial nerves are associated with the eye?
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3, 4, 6
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LR tendon is innervated by?
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CN 6
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What inervates the superior oblique muscle?
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CN 4
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IR, MR, and SR are innervated by what?
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CN 3
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Levator palpebrae superioris is innervated by?
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CN 3
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What closes the eyelid?
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Obicularis occuli innervated by CN 7
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Bell's palsy affects what nerve?
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CN 7, no closure of eye
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