optic cup


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op·tic cup

the double-walled cup formed by the invagination of the embryonic optic vesicle; its inner component becomes the neural layer of the retina and its outer layer becomes the pigmented layer.

optic cup

n. Embryology
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.

op·tic cup

(op'tik kŭp)
The double-walled cup formed by the invagination of the embryonic optic vesicle; its inner component becomes the neural layer of the retina; its outer layer, the pigmented layer.

cup, optic 

1. A double layered cup-shaped structure attached to the forebrain of the embryo by means of a hollow stalk. It develops into the retina and inner layers of the ciliary body and iris. It is formed by the invagination of the outer wall of the optic vesicle. Subsequently, nerve cells develop in its invaginated layer and some of these send their axons back along the hollow stalk (optic stalk or lens stalk) to form the optic nerve. Syn. ocular cup; ophthalmic cup; secondary optic vesicle.
2. Synonym for physiological cup. See anophthalmia; ectoderm; optic fissure; optic vesicle.
References in periodicals archive ?
Alemany, "Automatic optic cup segmentation algorithm for retinal fundus images based on random forest classifier," in IEEE EUROCON 2015-International Conference on Computer as a Tool (EUROCON), Salamanca, Spain, 2015, no.
As a comprehensive analysis, Table 15 illustrates the results for all three datasets combined together for all the following four parameters: (1) optic disc, (2) optic cup, (3) HCDR, and (4) VCDR.
Lang, "Optic cup and facial patterning defects in ocular ectoderm [beta]-catenin gain-of-function mice," BMC Developmental Biology, vol.
The pigmented and neuronal character of the outer and inner layers of cells in these spontaneously formed tissues were confirmed by gene expression, indicating that optic cup development had been recapitulated in vitro, and importantly, in the absence of any external signaling sources, such as from the lens, demonstrating the capacity for self-organization.
"What we've been able to do in this study is resolve a nearly century-old problem in embryology, by showing that retinal precursors have the inherent ability to give rise to the complex structure of the optic cup," said Sasai.
Now in its sixth year, the two-day event sees optometry undergraduates from each of the nine UK universities that offer the degree gather to compete for the coveted Optic Cup.
Some of Dr Quigley's 'pearls' included the observation that experts can pick out the optic cup rim accurately, but Bruch's membrane extends further in than specialists can tell clinically, so they differ on disc margins.
To be hosted by Cardiff University on February 28-March 2, representatives from each of the nine UK universities which offer optometry as a degree are encouraged to establish a team of up to 30 people to compete against each other for the coveted Optic Cup.
Now in its fifth year, the two-day event sees optometry undergraduates from each of the nine UK universities that offer the degree gather to compete for the coveted Optic Cup.
STUDENTS FROM the University of Bradford arose victorious to be named the winners of Opfest 2013, taking back the coveted Optic Cup from Glasgow Caledonian.
The optic cup and the small vessels on the disc are obscured.