Unusual visual loss after snakebite

Tungpakorn, N

doi:10.1590/s1678-91992010000300020

Cited by 13 publications

(9 citation statements)

References 10 publications

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“…Other complications may include optic neuritis, globe necrosis, and retinal degeneration . Reports of ophthalmic manifestations after viperine snakebites in humans include subconjunctival hemorrhage, hyphema, uveitis, endophthalmitis, glaucoma, vitreous hemorrhage, retinal hemorrhage, central retinal artery occlusion, macular infarction, and blindness secondary to cortical infarction . To the authors' knowledge, despite several papers describing the systemic and local manifestation of snakebite envenomation in dogs, there have been no reports of ocular abnormalities in those cases.…”

Section: Introductionmentioning

confidence: 98%

Ophthalmic abnormalities secondary to periocular or ocular snakebite (pit vipers) in dogs—11 cases (2012–2014)

Martins

Plummer

Gelatt

et al. 2015

Veterinary Ophthalmology

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Section: Introductionmentioning

confidence: 98%

Ophthalmic abnormalities secondary to periocular or ocular snakebite (pit vipers) in dogs—11 cases (2012–2014)

Martins

Plummer

Gelatt

et al. 2015

Veterinary Ophthalmology

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“…Central retinal artery occlusion though reported earlier by many others was not seen in present study. [25][26][27] Bilateral disc edema and retinal haemorrhages were noted in 2 of our patients with severe envenomation.…”

Section: Discussionmentioning

confidence: 95%

Ocular manifestations of snake bites in a tertiary care hospital in rural Northern Kerala, India

George¹,

Asha²,

Ravindran³

et al. 2017

Int J Res Med Sci

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Background: Snake bite is a neglected public health problem worldwide especially in the tropics. Studies on ocular manifestations are still fragmentary. The objective of the study was to find ocular manifestations among the snake bite cases with systemic envenomation admitted in the intensive care units in a tertiary care hospital in rural North Kerala, India during a period of 4 years from May 2012 to May 2016.Methods: It was a prospective, observational, cross sectional study. Institutional ethical committee approval was obtained for the study. A descriptive analysis of snake bite cases with systemic envenomation was done. Other snake bites are excluded from the study. Patients who needed ophthalmological opinion for ocular symptoms were analyzed.Results: Total suspected snake bites admitted in ICUs during the study period were 638. Only 7 patients (1%) with haematotoxic envenomation needed ophthalmological opinion for ocular symptoms. Patients in the present study ranged between the age of 11 and 53. Ocular lesions diagnosed among the 6 patients who developed capillary leak syndrome, were bilateral angle closure glaucoma in 3 patients, pan uveitis, disc edema and retinal haemorrhages in 2 patients, bilateral macular oedema. Youngest patient had intracranial haemorrhage and bilateral orbital hemorrhage, leading to exposure keratitis. SAV was administered in all patients ranging from 11-30 vials. All the patients except the patient with orbital haemorrhage had a grave prognosis. Still only one of these patients expired on day 3, rest all patients had better vision and survived due to timely management.Conclusions: A timely intervention especially at the initial presentation of capillary leak syndrome, can decrease the morbidity and save the life of a patient.

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“…This leads to formation of fibrin cross links, which are promptly lysed by the fibrinolytic system. 13 Eventually this leads to disseminated Intravascular coagulation and coagulopathy that can cause sub-conjunctival and intraocular haemorrhage. Anterior uveitis following snake bite has been reported uncommonly.…”

Section: Discussionmentioning

confidence: 99%

Ocular Manifestation and Long Standing Visual Impairment Following Venomous Snake Bite

Das¹,

Samaddar²,

Jana³

2015

jemds

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OBJECTIVE: Snake bite is an environmental hazard associated with significant ocular morbidity and some have sight threatening complications. Objective of this study was to determine the ocular manifestations and long standing visual impairment following snake bite and to acquaint the ophthalmologists and related health professionals about the sight threatening ocular complications related to snake bite. METHODS: Prospective data was collected from the Dept. of Internal Medicine, Burdwan Medical College, a rural based tertiary care hospital in eastern India. All snake bite patients admitted in the Department of Internal Medicine were examined and all patients with ocular manifestations were included in the study. RESULTS: Out of 245 cases of snake bite, 51(27.27%) cases of venomous snake bite with ocular findings were included in this study. Thirty three (64.71%) out of 51 were vasculotoxic and 18(35.29%) were neurotoxic in nature. Commonest ocular manifestation of neurotoxic bite was ptosis, followed by diplopia, ophthalmoplegia and optic neuritis. In vasculotoxic snake bites retinal and vitreous hemorrhage (36.36%) was most common followed by subconjunctival hemorrhage and chemosis (27.28%), lid oedema (18.18%), hyphaema (12.12%) and anterior uveitis (6.06%). Causes of long standing visual impairment were retinal hemorrhage in one patient and vitreous hemorrhage in two patients. CONCLUSIONS: Ocular morbidity following snake bite were more common among young males. Majority of long standing visual impairment were associated with vasculotoxic snake bite and required long term follow-up.

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Unusual visual loss after snakebite

Cited by 13 publications

References 10 publications

Ophthalmic abnormalities secondary to periocular or ocular snakebite (pit vipers) in dogs—11 cases (2012–2014)

Ophthalmic abnormalities secondary to periocular or ocular snakebite (pit vipers) in dogs—11 cases (2012–2014)

Ocular manifestations of snake bites in a tertiary care hospital in rural Northern Kerala, India

Ocular Manifestation and Long Standing Visual Impairment Following Venomous Snake Bite

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