Walsh & Hoyt: Megalopapilla

This congenital anomaly was first described by Kraupa and has since been reported in numerous other individuals. In 1950, Franceschetti and Bock originally applied the term megalopapilla to signify enlargement of the optic disc without additional structural abnormalities. Since that time, megalopapilla has become a generic term that connotes an abnormally large, excavated optic disc that lacks the numerous anomalous features of the morning glory disc anomaly, the inferior displacement of a coloboma, or the striking cilioretinal circulation of the papillorenal syndrome (see below). In its current usage, megalopapilla comprises two phenotypic variants. The first is a common variant in which an abnormally large optic disc (greater than 2.1 mm in diameter) retains an otherwise normal configuration.