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Sunglasses are indispensable for any sort of outdoor activity. Whether you are hiking, fishing, backpacking, biking, or floating, a quality set of sunglasses does many things. First, sunglasses protect the eyes from the sun’s harmful rays (described below). Secondly, a good pair of sunglasses will also provide superb protection from dirt, sand, snow, and other “impacts” that have a tendency to find their way into your eyes during active outdoor activities.
The Sun’s Harmful Rays
As most people know, the sun throws out many harmful rays that, over time, can lead to some serious eye problems. Since few people know about the exact type of rays, this section describes the types of rays that is produced by the sun that are also harmful to the naked eye – especially over extended periods of time.
The Sun’s Ultraviolet (UV) Rays: What They Are
UV Rays are ultraviolet rays emitted from the sun. While some wavelengths of UV rays are visible (such as “black light”), the harmful UV rays that are emitted from the sun – and which you need to worry about – are invisible. As such, UV Rays are sort of a silent, stealthy light ray that can cause serious damage to the eye over time.