Sunglasses for Healthy Eyes this Summer

Brad Schwantke, O.D.

Though many people wear sunglasses for their “style”, sun protection is actually very important for the health of our eyes. The sun emits not only visible light but also harmful ultraviolet rays. Many of us have experienced these rays in the form of sunburn. 

There are three types of UV radiation. UV-C is absorbed by the earth’s ozone layer which makes its affects insignificant. UV-A and UV-B both have long and short term effects on the eyes and vision, which make it extremely important to protect your eyes with quality sunglasses. Overexposure to UV radiation has been associated with developing cataracts and also it is believed to play a role in the onset of macular degeneration.  Our eyes can also experience a sunburn-like effect known as photokeratitis.  Photokeratitis may be painful and include symptoms such as red eyes, a foreign body sensation or gritty feeling in the eyes, extreme sensitivity to light and excessive tearing.

It is even more important to remember sunglasses for kids. Most parents will lather their kids in sunscreen, but are unaware of the importance of UV eye protection for kids. It has been shown that over 50 percent of the damage from UV has been done before the age of 18.

For adequate eye protection, sunglasses should at the very minimum block 99 percent of both UV-A and UV-B radiation. They should also screen out 75-90 percent of visible light. Make sure your sunglasses are quality to ensure continued eye health.