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13 Cards in this Set
- Front
- Back
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list events of corneal abrasion healing
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basal cell mitosis stops, epithelial sheet migrates onto wound area, basal cell mitosis occurs at a rapid rate
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3 places for Blood-acqeous barrier?
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iris vessels, npce, schlemm's canal endothelium
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what's the avg osmolarity of the tear film? so, what do you need an eye drop to have?
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315 mOsm/kg. needs to be hypotonic- 150.
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avg pH of tears? during sleep?
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7.45, 6.56
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what ions contribute to the isotonic state of tears-cornea?
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na and cl
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what produces linear VOR? angular VOR?
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vestibule. Semi-circular canals
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pursuits are controlled by what? saccades?
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ipsilateral parietal. contralateral FEF's and superior colliculus
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So, if the OKN drum is moving from left to right, what is causing what eye movements?
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Right pursuit controlled by right parietal. Left saccade controlled by right FEF and right superior colliculus
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ddx the junctions in the corneal epithelium and endothelium?
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epi has zonula occludens and endo has macula occludens
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what is perfusion pressure?
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pressure of CRA minus pressure of CRV
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when are rod outer segments shed? cones'?
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morning. evening
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describe phototransduction.
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sodium channels are closed as a result of a decrease in cGMP
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light absorption into a photoreceptor
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11-cis retinal to all-trans retinal
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