The previous section on UV coatings discusses the problem of UV radiation. While the effects of UV radiation are a general concern, other health considerations are more specific. For example, if you have very sensitive eyes, you may wish to use sunglasses that filter a larger portion of the visible light spectrum.
Sunglasses can also be tremendously useful as safety devices.
By reducing glare, they allow you to be more visually aware of your surroundings. You may have noticed that most highway patrol officers wear sunglasses. Some sunglasses are equipped with specific filters that reduce glare, increase contrast, or even increase your depth perception. This makes them ideal for certain sports, like beach volleyball, or certain professions, like the highway patrol. Also, by filtering out harmful radiation, sunglasses allow you to spend more time engaged in outdoor activities without suffering some of the drawbacks.