Intermittent Exotropia As the Presenting Sign of Pit Viper Snakebite to an Extremity: A Case Report

Abstract

Snake venom can cause various local and systemic signs and symptoms. The most common complication is local tissue destruction, which often results in a loss of function. However, neurotoxicity is uncommon. The unique structure of the extraocular muscles makes them particularly susceptible to neurotoxins. The clinical effects of the neurotoxin to the eye include decreased visual acuity, diplopia, ptosis, and external ophthalmoplegia. We report a patient who had an intermittent exotropia with a mild underaction of medial rectus of the left eye caused by envenomation.