Ophthalmic Injuries from Spitting Cobra Venom: Three Case Reports
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Abstract
Direct ocular inoculation with spitting cobra venom can cause irritation, pain and decreased visual acuity . Delayed treatment may result in corneal ulcer, corneal perforation and blindness. The initial management of venom ophthalmia consists of urgent decontamination by copious irrigation of tap water, normal saline or a bland fluid such as milk if nothing else is available. The first aid has proved effective in preventing further venomophthalmia complications. Topical anti-inflammations and antibiotics can be used to reduce the risk of inflammation and prevent secondary infection. There is no evidence of systemic spread of venom from ocular spitting exposure. Antivenom (topical or intravenous) is not indicated for patients with ocular exposure to venom spitting.
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References
Fung HT, Choy CH, Lau KH, Lam TSK, Kam CW. Ophthalmic injuries from a spitting Chinese cobra. Hong Kong J. Emerg. Med 2009;16: 26-8.
Sharma VK, BaranwalVK.Snake venom ophthalmia.Med J Armed Forces India 2015;71(Suppl 1):s197-8
GoldmanDR, SeefeldAW. Ocular toxicity associated with indirect exposure to african spitting cobra venom .Wilderness Environ Med2010;21(2):134-6.
Chu ER, Weinstein SA, White J, Warrell DA.Venom ophthalmia caused by venoms of spitting elapid and other snakes: report of ten cases with review of epidemiology, clinical features, pathophysiology and management.Toxicon 2010; 1;56:259-72.
Ang LJ, Sanjay S, Sangtam T. Ophthalmia due to spitting cobra venom in an urban setting—a report of three cases.Middle East Afr J Ophthalmol 2014; 21:259-61.
Warrell D. Guidelines for the management of snake-bites. New Delhi: World Health Organization; 2010.
Baldé MC, Chippaux JP, Boiro, MY. Use of antivenoms for the treatment of invenomation by Elapidae snakes in Guinea, Sub-Saharan Africa. J Venom Anim Toxins Incl Trop Dis 2013;19(1):6.
Fung HT, Lam KK, Wong OF, Kit Lam ST. Local antivenom treatment for ophthalmic injuries caused by a naja atra. J Med Toxicol 2010;6 :147–9.
Ismail M, Al-BekairiAM, El-Bedaiwy AM, Abd-ElSalam MA. The ocular effects of spitting cobras: I. The ringhals cobra (hemachatushaemachatus) venominduced corneal opacification syndrome. J ToxicolClinToxicol 1993;31:31-41.