Optic cup
Optic Cup
The Optic Cup is a two-layered structure formed in the embryonic stage of vertebrates, which plays a crucial role in the development of the eye. It is derived from the optic vesicle, an outpouching of the diencephalon (part of the brain), and is the precursor to several important structures of the eye, including the retina, the iris, and the ciliary body.
Development
The optic cup forms during the embryonic stage of development. The optic vesicle, which is initially a spherical structure, invaginates to form a two-layered cup. The inner layer of the optic cup will give rise to the neural retina, while the outer layer will form the retinal pigment epithelium. The edge of the optic cup, known as the optic rim, will develop into the iris and the ciliary body.
Clinical Significance
Abnormalities in the formation of the optic cup can lead to a variety of ocular disorders. For example, coloboma, a condition characterized by a missing piece in the structure of the eye, can occur if the optic cup does not close properly. Similarly, microphthalmia (small eyes) and anophthalmia (absence of the eye) can result from problems with optic cup formation.
See Also
References
| Anatomy of the globe of the human eye | ||||||||||||||||||
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| Embryology of the Nervous System | ||||||||||
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