B- mode ultrasonographic biometry of cataractous eyes in dogs

Abstract

Cataract is one of the main reasons interfering with examination of the eye in many species of animals. As the opaque lens obscures visualization of the posterior segment of the eye, evaluation of the structures in the posterior segment becomes impossible. B-mode ultrasonography of the eye plays a major role in such conditions to evaluate the posterior segment and to evaluate the biometry of the intraocular structures. In the current study, dogs with cataracts of various stages were subjected to ocular ultrasonographic evaluation and biometry of ocular structures. Biometry for ocular parameters like axial length of the eye (D1), vitreous chamber depth (D2), lens diameter (D3) and lens depth (D4) were recorded in all the dogs with cataractous lens. The ultrasonographic appearance of the lens varied in echogenicity with the stage of the cataract. The changes in the cortex and nucleus part of the lens were also imaged and recorded. B-mode ultrasonography was useful in ruling out structural pathologies related to the vitreous and retina prior to cataract surgery