Abstract
Ocular B-mode ultrasonography is one of the noninvasive, rapid diagnostic imaging techniques indicated in canine cataract patients to evaluate the posterior segment of the eye. This study was conducted on twelve eyes of dogs with a history of cataract, which were scanned under topical anesthesia. The preoperative and postoperative ultrasonographic biometry, and ultrasonographic features of the lens, intraocular lens (IOL), and posterior segment were recorded. There was a significant difference between pre- and postphacoemulsification mean value of the axial length of globe and anterior chamber depth. The normal ultrasonographic features of the 2-hydroxy-ethyl-methylacrylate IOL was observed in vitro by placing the IOL in a coupling gel bath; it appeared as a flying saucer with hyperechoic margins and a central anechoic optic area and similar findings were also observed in pseudophakic eyes. Posterior segment changes such as posterior vitreous detachment were noticed in two dogs and retinal detachment in one dog postoperatively. In conclusion, ocular B-mode ultrasonography could be used to locate the position of the IOL in canine pseudophakic eyes. Ocular ultrasound is still more a useful tool to locate the position of the IOL postoperatively, even in pseudophakic eyes with corneal edema or iris synechiae in dogs.
Highlights
Ocular B-mode ultrasonography is one of the noninvasive, real-time, rapid diagnostic imaging techniques that allow evaluation of internal structures of the eye [1]
Many ultrasonographic studies were done in dogs but very few of them have explained the position of the intraocular lens (IOL) and posterior segment changes in the pseudophakic eyes
This article focuses on ultrasonographic changes observed in the cataractous lens and the posterior segment of the canine eye preoperatively and the ultrasonographic features of the IOL and changes observed in the posterior segment postoperatively following phacoemulsification of cataract
Summary
Ocular B-mode ultrasonography is one of the noninvasive, real-time, rapid diagnostic imaging techniques that allow evaluation of internal structures of the eye [1]. This imaging technique is indicated when there is presence of opacity on the refractive ocular structures such as the cornea and lens, which leads to futile ophthalmoscopic examination of the posterior segment of the eye [2]. Many ultrasonographic studies were done in dogs but very few of them have explained the position of the intraocular lens (IOL) and posterior segment changes in the pseudophakic eyes. This article focuses on ultrasonographic changes observed in the cataractous lens and the posterior segment of the canine eye preoperatively and the ultrasonographic features of the IOL and changes observed in the posterior segment postoperatively following phacoemulsification of cataract
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