Optic vesicles

Optic vesicle
Transverse section of head of chick embryo of forty-eight hours’ incubation. (Optic vesicle labeled at lower right.)
Human embryo about fifteen days old. Brain and heart represented from right side. Digestive tube and yolk sac in median section. (Optic vesicle labeled at center top.)
Details
Carnegie stage	11
Identifiers
Latin	vesicula optica; vesicula ophthalmica
Code	TE E5.14.3.4.2.2.4
Anatomical terminology []

The eyes begin to develop as a pair of diverticula from the lateral aspects of the forebrain. These diverticula make their appearance before the closure of the anterior end of the neural tube; after the closure of the tube they are known as the optic vesicles.

They project toward the sides of the head, and the peripheral part of each expands to form a hollow bulb, while the proximal part remains narrow and constitutes the optic stalk.

Head of chick embryo of about thirty-eight hours’ incubation, viewed from the ventral surface. X 26

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)