By Marc Braithwaite, OD
Chief of Optometry

Sunglasses are more than a way to look stylish or reduce glare on a bright, sunny day. They are an important way to protect your eyes from long-term damage from ultraviolet (UV) light.

Too much UV light can increase the chance of cataracts and macular degeneration developing. In some cases, it can also lead to benign growths on the eye’s surface as well as skin cancer near the eyes. This is why eye doctors suggest wearing sunglasses for better overall eye health.

Adults and children should wear sunglasses whenever they are outside in the sun. It’s also a good idea to wear sunglasses on cloudy or overcast days. This is because while the clouds diminish the sun’s UV rays, they are not blocked completely. Making a habit of wearing sunglasses when outdoors helps lower the cumulative effects of lifelong UV exposure on your eyes.

Always look for 100% UV protection

When shopping for sunglasses, look for a tag or sticker that lists 100% UV protection. Some sunglasses are labeled “UV absorption up to 400nm.” This means the lenses block UVA and UVB rays in wavelengths up to 400 nanometers. This is another way of saying they offer 100% protection from UV light.

Polarized or non-polarized?

Polarized sunglasses only let wavelengths from a certain direction reach your eyes. This helps make your vision clearer since it reduces glare. Many people prefer polarized glasses when driving, boating or skiing. However, they make it difficult to view LCD screens and are not ideal for all situations. Just because a lens is polarized does not mean it offers UV protection. So always check the label to make sure your eyes are getting the UV protection you need. Transition lenses, which become darker when exposed to UV light, also should be checked for their UV protection.

Some more tips on how to choose sunglasses:

• Sunglasses that feature a wraparound style give the best overall eye protection. This is because they limit how much sunlight reaches your eyes from all angles.
• Keep in mind that darker sunglasses will not offer any added UV protection for your eyes.
• If you need them, most frames for sunglasses can be ordered with corrective lenses.
• If you don’t want wraparound sunglasses, choose a frame with a wider temple. This will also help block light coming from the sides.

Sunglasses are an essential way to protect your eyes. Seeing your eye doctor each year for a comprehensive exam is also important for eye health. Reliant’s Eye Services department welcomes the opportunity to serve all your vision needs.