How do sunglasses protect your eyes from UV damage

Did you know that there are more than 5 benefits to your sunglasses?

But let’s focus on the most important one of them: sunglasses prevent UV rays that can hurt your eyes. The UV rays from the sun, as lovely as the sun is, are quite harmful to your eyes. Macular Degeneration is a disorder that causes vision loss and is caused by prolonged UV exposure to the retina. Protect your eyes with sunglasses that block 100% of UV rays.

So what exactly are UV rays?

Ultraviolet is a form of electromagnetic radiation with a wavelength from 10 nm to 400 nm, shorter than that of visible light, but longer than X-rays. UV radiation is present in sunlight and constitutes about 10% of the total electromagnetic radiation output from the Sun.

Most sunglasses now have UV protection built into the lens rather than being coated on top of it, and most reputable brands specify UV protection on their labels. Look for a label that says "100 percent UVA and UVB protection" or "100 percent UV 400 protection."

But just remember:

• If you spend a lot of time outside, especially near water, wrap-around sunglasses that block UV rays from the sides are a good option. This design will also keep the wind from drying out your eyes. They do not have to be costly. They simply must fit properly, and you must wear them for as long as you are in the sun. This is true for children of all ages.
• Even if you're in the shade, remember to wear sunglasses. Although shade minimizes UV and HEV exposure to some extent, UV rays reflected from buildings, streets, and other surfaces will still reach your eyes.
• Sunglasses are required even if your contact lenses protect against UV radiation. UV-blocking contacts only protect the area of your eye that is covered by the lens. UV rays can still harm your eyelids and other tissues that aren't protected by your lens. UV protection for these fragile tissues and the skin around your eyes is provided by wearing sunglasses.

If you’re uncertain about your sunglasses simply take them to a professional where they can be tested in a photometer.