Congenital glaucoma in a tiger
The aim of this study was to describe a case of congenital glaucoma in a tiger (Panthera tigris).
An 8-month-old intact female tiger was referred for suspected glaucoma of the right eye. The right eye was buphthalmic with moderate episcleral injection, circumferential superficial corneal neovascularization, moderate corneal edema, and a fixed dilated pupil. Rebound tonometry under general anesthesia revealed 70 mmHg and 21 mmHg in the right and left eye, respectively.
A trans-conjunctival enucleation was performed, and the globe was submitted for histopathology.
Histopathology revealed a thin sclera, amorphous material contouring an imperforate and hypoplastic iridocorneal angle, a hypoplastic lens with severe anterior-posterior compression, subcapsular epithelial hyperplasia, and Morganian globules, and segmental moderate retinal atrophy. Periodic acid-Schiff stain highlighted segmental dilations of the Descemet's membrane.
In conclusion, the tiger's age and histopathologic findings are consistent with congenital goniodysgenesis. This is the first known report of congenital glaucoma in a tiger.
Allison E Dianis, et al. “Congenital glaucoma in a tiger (Panthera tigris).” Vet Ophthalmol. 26 May 2023. doi: 10.1111/vop.13110.
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