Question

what is snow blindness

Answer 1

Snow blindness, also called arc eye or photokeratitis, is a painful eye condition caused by overexposure to ultraviolet (UV) light. When too much UV light hits the transparent outer layer of your eyes, called the cornea, it essentially gives your cornea a sunburn.

Snow blindness symptoms can be disorienting. They include:

pain in your eyes

headache

blurred vision

temporary loss of vision

But snow blindness is easily treatable, and your eyes will heal quickly once you remove yourself from the UV rays and rest your eyes.

Answer 2

Snow blindness is a painful, temporary loss of vision due to overexposure to the sun's UV rays. The medical term for snow blindness is photokeratitis ("photo" = light; "keratitis" = inflammation of the cornea). Essentially, snow blindness is caused by a sunburned eye — or more specifically, a sunburned cornea.