Are Sunglasses Really Necessary in Winter?

Sunglasses may signal summer vibes, but they are essential in winter too. The sun’s UV (ultraviolet) rays don’t take a holiday-they can reach the delicate layers of the eye all year long. UV rays from the sun are constant year-round and can penetrate through all seasonal conditions, even when it doesn’t feel sunny. In summer, UV exposure is higher because the sun is at a more direct angle, but in winter, snow and ice can reflect up to 80% of UV rays, effectively doubling their intensity. UV rays also cut through clouds, meaning overcast days don’t protect you from potential eye damage. Whether it’s sunny, cloudy or snowy, your eyes are always exposed to UV radiation, making proper protection like sunglasses a must in every season.

UV rays can harm the eyes in multiple ways, affecting the cornea, lens, retina and even the surrounding skin. Prolonged exposure can cause photokeratitis (a painful sunburn of the cornea), cataracts (clouding of the lens leading to blindness) and macular degeneration (retinal damage that impairs central vision). The conjunctiva may develop growths like pinguecula or pterygium, while the delicate skin around the eyes is prone to wrinkles, premature aging and skin cancer. UV damage is cumulative, so protecting your eyes consistently is essential to prevent long-term harm.

In addition to UV rays, cold, dry air and windy conditions are common culprits for causing or worsening dry eyes during the colder months. Sunglasses act as a physical barrier, shielding your eyes from harsh winds and reducing moisture loss. For even better protection, wraparound sunglasses are a great choice to minimize airflow around your eyes.

Not wearing sunglasses at all or wearing sunglasses without 100% UV protection can seriously harm your eyes, leading to uncomfortable, inflamed or reduced vision, or even blindness. The lens color or darkness doesn’t matter—what’s crucial is blocking 99-100% of UVA and UVB rays. Always check the label for phrases like “100% UV protection” or “UV400” to ensure your sunglasses are up to the task. If there’s no label, look for the identification numbers on the arm of the glasses. You can search these numbers on the manufacturer’s website to confirm they offer the protection your eyes need. Protect your vision—your future self will thank you. 

Safeguard your eyes year-round by wearing sunglasses every time you step outside—even in winter. Don’t forget to prioritize your vision with an annual comprehensive eye exam. While sunglasses shield you from harmful UV rays, natural aging can still bring changes to your eyes that only early detection can catch. Schedule your appointment today at Pennachio Eye by calling 325-227-1999 or visiting WEBSITE.