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We aimed to conduct an ocular examination on a tiger with suspected glaucoma rescued from a circus and on a normal control. Initial observation with flashlight was followed with a complete eye examination under sedation with ketamine and xylazil. We diagnosed anterior staphyloma with secondary glaucoma in the right eye and secondary glaucoma in the left eye of the tiger. The intraocular pressure (IOP; tonopen) in the affected and normal tigers were >80 and <14 mm Hg, respectively. The dependent IOP was higher. Circumstantial evidence suggested that the secondary glaucoma in the tiger was probably caused by circus training-related trauma.
We have heard of reports on glaucoma in cats, dogs and lions,1–5 but not in tigers. We had the opportunity to examine the eyes of a 22-year-old male tiger (Panthera tigris …
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