We talk a lot about blue light and how digital eye strain can cause itchy, tired eyes, but it isn’t the only type of light that you should be worried about. Although it affects the eyes in different ways, UV radiation can also damage the eyes.
UV radiation begins on the spectrum where blue light leaves off at 400nm, climbing into the higher energy levels of the spectrum. UV light is not emitted by our digital devices, but abounds from the most prevalent source of light in our world, the sun. It can come at the eyes from all angles being reflected by water, snow, and any other bright or reflective surface.
If you work outside or participate in outdoor activities such as hiking, fishing, snowboarding, watersports, or really anything involving prolonged daylight activity then you may be at risk for UV light damage to your eyes. It’s important that you take protective measures by wearing sunglasses specifically designed to protect your vision.
According to the American Optometric Association, sunglasses should block 99% to 100% of all UV light and 75%+ of all visible light in order to properly protect your eyes.
Are those sunglasses you’re putting on protecting your eyes as intended or are they just a fashion statement? If you spend a lot of time outdoors then knowing the difference could save your vision.