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from: Eye Health and Sunglasses
When people find hard to look or find the sun too bright, it is a common feel to be uncomfortable with it and that is one of the reasons why people use sunglasses. As a visual aid, termed variously in different countries, sunglasses may come on different sizes and colors.
Most manufacturers claim that having a lens that is colored or darkened to prevent strong light from reaching the eyes is equal to the protection it gives against UV rays. But far off from it. Not all sunglasses offer the said feature until the industry posed a standard on the measurement of protection. But why do we really need to get protected?
During outdoor activities, the human eye can receive more light than usual. Healthcare professionals suggest eye protection whenever outside to protect the eyes from ultraviolet radiation, which can lead to the development of a cataract. UV rays have also been associated to contribute to several culprits to good eye health such that this also leads to other forms of eye cancers.
It is extremely important to protect your eyes against the harmful UV rays of the sun. More often, people find it a good remedy to have an inexpensive pair of sunglasses for the job.
But what are UV rays? The sun produces different types of light. The most harmful to your eyes are ultraviolet, or UV rays, bright or intense light and blue light.
UV rays carry more energy than visible light rays. UVA and UVB are the types of UV lights that reach the earth from the sun. The eye is at a greater risk from absorbing UV radiation than from any other type.
Blue light is visible light. Typically blue light is found in reflections of snow and water. Blue light thwarts the eyes from focusing properly and routine exposure to blue light over many years may age the eyes and increase the risks of blindness.
When your eyes absorb light, the eye tissue is affected by heat and chemical reactions. These reactions can cause permanent damage if they eye becomes overwhelmed and the natural ability to heal itself is compromised. Eyes that are overexposed to UV radiation can suffer damage to the front portion. The retina can be damaged if you stare directly into the sun, even briefly, and can cause permanent loss of vision. UV radiation, wind, and dry eyes can cause a temporary, but uncomfortable condition called snow blindness.
Thse are some of the imprtant reasons why youn ought to wear sunglasses whenever you get exposed to the sun's rays. Not only sunglasses are worn for fashion but to take care your eye heath.
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