Sunglasses - Why wear sunglasses? Properly chosen sunglasses can help your vision by reducing glare, improving contrast and making you feel more comfortable when out in the sun. Sunglasses can also help to prevent some direct damage to the eye from light. It's not necessary to buy high-priced brands to get good UV protection, as most sunglasses now on the market block a large percentage of UV radiation. It makes sense to wear sunglasses when it's sunny ­­ both for comfort and to reduce any risk from UV and blue light