Optic cup
Optic Cup
The Optic Cup (pronounced: /ˈɒptɪk kʌp/) is a significant structure in the embryonic development of the eye in vertebrates.
Etymology
The term "Optic Cup" is derived from the Greek words "optikos" meaning "of sight" and "cup" referring to the cup-like shape of the structure.
Definition
The Optic Cup is a two-layered structure formed by the invagination of the Optic Vesicle during the embryonic development of the eye. It is composed of an inner and outer layer, both of which play crucial roles in the formation of the retina and other parts of the eye.
Structure and Function
The inner layer of the Optic Cup gives rise to the neural retina, which contains the light-sensitive cells (rods and cones) and the initial processing units of the visual system. The outer layer forms the retinal pigment epithelium, which provides support and nourishment to the neural retina.
The Optic Cup also plays a role in the formation of other parts of the eye. For example, the edge of the cup, known as the optic rim, contributes to the formation of the iris and the ciliary body.
Related Terms
- Optic Vesicle: The structure from which the Optic Cup is formed.
- Retina: The light-sensitive layer of the eye, formed by the inner layer of the Optic Cup.
- Retinal Pigment Epithelium: The supportive layer of the retina, formed by the outer layer of the Optic Cup.
- Iris: The colored part of the eye, partially formed by the edge of the Optic Cup.
- Ciliary Body: The structure in the eye that produces aqueous humor, partially formed by the edge of the Optic Cup.
External links
- Medical encyclopedia article on Optic cup
- Wikipedia's article - Optic cup
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