[Formation of congenital anomalies of the optic disc. Part II. Congenital anomalies of the optic disc with inappropriate disc size].

Embryological conditions, each of fifth congenital anomalies of the optic disc from the group of anomalies of inappropriate optic diameter was described. Few available epidemiological data were given. The influence of medications, drugs, intoxications, as well as premature birth on genesis of congenital anomalies was taken into consideration.

[Formation of congenital anomalies of the optic disc. Part I. Embryological and genetic aspects of the optic disc and nerve development].

Embryogenesis of the eye was presented and definite time of arising congenital anomalies of the optic disc, which characterized abnormal diameter disc, was determined on its background. As well genes, which control development of the optic disc were detailed.