Unilateral persistent hyperplastic tunica vasculosa lentis/persistent hyperplastic primary vitreous (PHTVL/PHPV) in a German shepherd dog

Abstract

A 2-month-old female German shepherd dog was presented with a history of unilateral ocular discharge and corneal opacity to the Veterinary Teaching Hospital of Shiraz University. On ophthalmic examination, the right eye was slightly buphthalmic with corneal edema, vascularization, and fibrosis, whereas, the left one had its normal size and shape. However, a deep corneal ulcer and fibrosis was also detected. Complete ophthalmoscopic examination of the right globe was not possible because of the edema and fibrosis. As a result, ultrasonography was performed. B-mode ultrasonography of the right eye revealed a subcapsular cataract. Behind and attached to the lens, a triangular-shaped echogenicity was seen which continued as a tubular hyperechoic structure to the optic disk. In contrast, the left eye was normal ultrasonographically. On the basis of the ultrasonographic findings for the right eye, the clinical diagnosis of unilateral persistent hyperplastic tunica vasculosa lentis/persistent hyperplastic primary vitreous (PHTVL/PHPV) was made.