Winter sun is no less dangerous than the summer. As noted by The Times of India, to be afraid of UV radiation. Sometimes it is even more intense in winter. Then, the body is closed in winter layers of clothing, but the eyes are exposed to the sun at 100%.
Because the eye can sun burns, and even more profound damage the cornea and conjunctiva. The consequence of the lack of eye protection from the sun may be related macular degeneration, cataracts, photokeratitis. Moreover, dangerous not only direct sunlight, and radiation reflected from snow and ice. There is even such a thing as "snow blindness" (watch the snow on a sunny day can not be without glasses). This condition can cause temporary vision loss for a period of 24-48 hours.
Among the abnormalities associated with UV radiation, and also pinguecula pterygium. They are linked to form a non-cancerous but painful buildup and deposits on the cornea and conjunctiva. A prolonged exposure to UV even possible cancer. Doctors insist: in winter it is necessary to wear glasses with polarized and UV protection.