Warning Signs Of A Venomous Snake Bite

Disruptions In Vision

Blurred, tunnel, double, or outright loss of vision may occur following an envenomation. Disruptions in vision may result from rapid shifts in blood pressure, damage to the ocular blood vessels, increase in pressure inside the eye, and neurological disruption. In rare and serious cases, the damage to the eyes may be severe enough to cause permanent loss or impairment of vision. Depending on the underlying cause, onset may be rapid or take hours, with visual disruption resulting from neurotoxicity taking up to eight hours to appear. The onset of visual symptoms may be gradual, or may occur suddenly, and may or may not be accompanied by physical pain or discomfort in the eyes. Disruptions in vision occurring within a day of a suspected snake bite should be taken as a symptom of possible envenomation, and immediate medical help should be sought to minimize damage to the eyes and other systems of the body.