optic cup

Medical Dictionary

optic cup n.
A two-walled cuplike depression, formed by invagination of the optic vesicle, that develops into the pigmented and sensory layers of the retina. Also called eyecup.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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WordNet
optic cup

noun
(embryology) a two-walled cuplike depression that develops into the pigmented and sensory layers of the retina 
WordNet® 3.0, © 2006 by Princeton University.
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