Wearing sunglasses throughout the year, including in winter, is crucial for several reasons:

1. UV Protection: UV rays from the sun can harm your eyes regardless of the season. Snow reflects UV light, increasing exposure. Polarized sunglasses with 100% UVA and UVB protection are recommended.
2. Prevention of Snow Blindness: Snow blindness, caused by overexposure to UV rays, is common in winter, especially at high elevations. Proper eye protection, such as sunglasses or photochromic lenses, can prevent this painful condition.
3. Safety When Driving: Sun glare while driving can be dangerous, particularly in winter when snow and ice create reflective surfaces. Sunglasses with appropriate tinting can reduce glare and improve visibility on the road.
4. Reduced Risk of Eye Disease: Prolonged UV exposure can lead to cataracts, macular degeneration, eyelid cancer, and other eye conditions. Sunglasses help prevent these diseases by shielding your eyes from harmful rays and reducing dryness caused by sun and wind exposure.