Optic nerves in cyclopic and synophthalmic embryos of Gallus domesticus.
The optic nerves of experimentally produced cyclopic and synophthalmic embryos of Gallus domesticus were studied to evaluate the course of the optic nerves in these abnormal circumstances. From this study it can be concluded that the course of the optic nerves appears largely to be a result of directional growth and that when decussation does occur in the optic chiasma, it results not from specificity as to side but from a tendency of outgrowing nerve processes to retain the direction of growth as fixed by axial orientation.
de Jager
L
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Department of Anatomy, University of the Orange Free State, Bloemfontein, South Africa.
D000818:Animals; D002642:Chick Embryo; D002645:Chickens / Q000002:abnormalities*; D009900:Optic Nerve / Q000002:abnormalities* / Q000000981:diagnostic imaging; D011859:Radiography; D014786:Vision Disorders / Q000473:pathology