What are urophthalmus?

Some articles on urophthalmus:

Cichlasoma Urophthalmus
... The Mayan cichlid (Cichlasoma urophthalmus) is a member of the Cichlidae family of fish ... uropthalmus and Cichlasoma (Nandopsis) urophthalmus in accord with the convention for taxonomically undetermined cichlids (Kullander 1983, Stiassny 1991) ...