Cornea

Test your knowledge of the cornea. Answers can be found in chapter 2 Dr. Remington's book: Cornea and Sclera.

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Last updated: November 3, 2012

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First submitted	November 3, 2012
Times taken	16
Average score	33.3%
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Hint	Answer
Corneal layer between the epithelium and stroma	Bowman's
Approximate thickness of the corneal epithelium (microns)	50
Cells in the corneal epithelium between basal cells and the suface cells	Wing cells
These attach basal cells in the epithelium to the basal membrane	Hemidesmosomes
The name for bundles of collagen fibrils in the stroma	Lamellae
Cells found within the corneal stroma	Keratocytes
This part of the ground substance in the stroma helps maintain corneal strength	Proteoglycans
These connections between cells are found in the endothelium and the surface cells of the epithelium	Tight junctions

Hint	Answer
The number of endothelial cells/mm squared needed to maintain function	400-700
This condition causes endothelial dystrophy, swelling of the cornea, and microcysts in the epithelium	Fuchs dystrophy
What percent of the glucose used by the cornea is used anaerobically?	85%
The longest wavelength of light transmitted through the cornea	2500 nm
Oxygen deprivation to the cornea can cause new vessels to grow into the cornea from the libus called what?	Neovasculariztion
Surgery to relpace only the posterior cornea including descemet's membrane and the endothelium is called what?	DSAEK
Antioxidants are common in the cornea including vitamin C and this other one that starts with a G.	Glutathione

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