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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.
Optic vesicles
| | Name | PAGENAME | | Latin | v. ophthalmica | | Graysubject | 224 | | Graypage | 1001 | | image |  | | Caption | Transverse section of head of chick embryo of... | | Image2 | Gray977.png | | Caption2 | Human embryo about fifteen days old. Brain an... | | Carnegiestage | 11 | | Dorlandspre | v_07 | | Dorlandssuf | 12855707 |
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