Ophthalmoscopic Observations on the Ocular Fundus of Fish

Abstract

1) The previous results obtained from ophthalmoscopic studies on the ocular fundus of fish were reviewed.

2) The results of histopathological investigations of carp, in which fundi were diagnosed to be in various pathological conditions by ophthalmoscopic observations, were reported. From the results of these investigations, it was inferred that fundus abnormalities in carp such as dilatation and tortuosity of vitreal vessels and retinal pigment degeneration might be caused by renal insufficiency.

3) Funduscopic photography of specimens of bigeye (Priacanthus macracanthus) which have a very high falciform process, and of specimens of red sea bream (Pagrus major) which have a low falciform process, were shown.