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7. Anterior Segment Ischemia in Viper Bite.

Author

Sivakumar, Rathinam R. and Rao, Narsing A.

Subjects
*SNAKEBITE treatment, *ANTERIOR eye segment, *ANIMAL models of ischemia, *INTRAOCULAR pressure, *HISTOPATHOLOGY, *NEUROTOXICOLOGY, *DISEASES, *ISCHEMIA diagnosis, *CATARACT, *CORNEA diseases, *HEMODIALYSIS, *IRIDOCYCLITIS, *IRIS (Eye), *ISCHEMIA, *RURAL population, *KIDNEY failure, *SNAKEBITES, *ATROPHY, *DISEASE complications, *DIAGNOSIS, *THERAPEUTICS, CATARACT diagnosis
Abstract

Purpose: To describe the clinical and histopathological features of post viper bite anterior segment ischemia.Methods: Seven patients with ocular complications following viper bite referred to uveitis clinic had slit-lamp examination, intraocular pressure (IOP) measurement, and fundus evaluation. Iris and fundus fluorescein angiography was performed on 2 patients. Histopathological examination was performed on iris tissues collected during cataract surgery.Results: Strikingly similar clinical findings were noted, including circumpupillary superficial iris atrophy, mid dilated fixed pupil, marked pigment dispersion, low IOP, and cataract. All clinical signs were noted only in the anterior segment; the posterior segment was normal. Histopathology of iris revealed atrophy of iris stroma, necrotic iris pigment epithelium, and infiltration of T lymphocytes and fibrous membrane. Poor visual outcome was noted in patients with low IOP.Conclusion: Viper bite victims presented with clinical and histopathological signs of anterior segment ischemia and secondary inflammatory signs mimicking uveitis. [ABSTRACT FROM AUTHOR]

Published
2016
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