Question

snow blindness caused by​

Answer 1

Answer:

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. And like sunburned skin, by the time you notice symptoms of snow blindness, you've already been in the sun too long.

Answer 2

because of   UV rays  and is a harmful disease