Snow-bllndness.

Long exposure of the eyes to theglare from snow gives rise to an acute conjunctivitis, attended with intense pain, photophobia,and occasionally conjunctival hemorrhages.

Source: Ophthalmic Dictionary including pronunciation, derivation and definition of the words used in Optometry and Ophthalmology by James J. Lewis, Oph. D. Professor of Optometry in the Northern Illinois College of Ophthalmology and Otology, Chicago.