Optic vesicle

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.

Additional images

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

References

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

External links

• eye-012—Embryo Images at University of North Carolina
• Overview at vision.ca
• Overview at temple.edu