In cycling, it is impossible to do without sunglasses and, even more so, to win races. In addition to protecting the eyes from dirt and dust, sunglasses are the best way to ensure cyclists do not suffer from cataracts, keratitis and other eye diseases caused by UV radiation.
Studies have shown that the risk of developing cataracts, the gradual clouding of the lens of the eye that can lead to complete blindness, is caused by prolonged exposure to the sun's ultraviolet (UV) rays. Eye protection is optimal with special sunglasses that block 100 percent of UV radiation.
Exposure of unprotected eyes to ultraviolet rays can also lead to keratitis, a temporary loss of vision combined with a burning sensation that results from inflammation of the cornea. A secondary solar threat - heat - causes eye fatigue and can precipitate negative manifestations of pre-existing vision problems.
The risk of eye damage from sun exposure is directly related to the duration and intensity of exposure. Nobody knows how much is critical, but the effects can be cumulative: short but frequent periods spent outside normal conditions can add to the trouble.
When looking for sunglasses that provide protection while cycling outdoors, there are a few key points to consider when choosing a pair for cycling:
Nearly all good quality bikes made today offer significant protection against ultraviolet (UVA and UVB) radiation. Some lens materials have a built-in ability to absorb U /V light, but most of the protection is achieved in the form of lens coatings.
The best color to choose is to use a neutral gray because it does not distort colors, although brown and other calm colors are fine as well. Photochromic lenses, which darken as light grows, will cover a wide range of conditions and are available in multiple density ranges.
