Register with IndexUK
Lost password?
Index UK - Free Business Directory, Promote your Website in the premier UK Index siteArticle Details

All You Wanted To Know About Eyewear
Date Added: March 16, 2010 06:28:54 PM
Author: cokntact59
Category: Health: Sexual Health

At the present time we wear sunglasses all year round. Fashionable sunglasses represent not only a stylish accessory, they are indispensable to protect your eyes against UV radiation. The penetration of UV-rays into the eyes may cause various ophthalmologic problems. Staying under the sunlight, both in summer and in winter, is unhealthy for your eyes. Human organism was adapted to shield the eyes from bright light – squinting and iris-contraction reflexes reduce the penetration of UV radiation into the eyes. But the UV-rays are active on a cloud day as well, so the above mentioned natural mechanisms are not enough for absolute protection. That's when wearing sunglasses goes to the rescue. Modern sunglasses with UV coat characteristics are an efficient appliance for individual protection from the ultra-violet rays. For example, wide-brimmed hats provide just 50% UV protection and are not effective in relation to reflected light. That's why your eyesight is misting and it is so difficult to drive a car when the sun shines brightly. Eyes irritation and headaches are instant symptoms if you're under the sun for a long period of time. What's more, all this may bring to more severe problems with time. Sunglasses with good UV cover characteristics in their turn provide high level of UV protection and better vision in the bright sun. The variety of lenses with ultra-violet coat characteristics is great, so you will possibly need a brief guide to make your choice. Firstly, don't forget that level of darkening and color have nothing to do with the effectiveness of UV-rays shielding. You should pay attention to these features when selecting the sunglasses in dependence on your activity. This way, middle-dark lenses are perfect for everyday wearing when at the same time being under the bright sunlight for a long time requires darker lenses. Sunglasses with polarized lenses are applied when driving or for water sports since this type of lenses diffracts the light reflected from smooth surfaces. For manufacturing prescribed sunglasses manufacturers apply photochromic lenses because optical transmission in these lenses is about 25-80%. There are also lenses of different colors used for various activities. This way, grey lenses are chosen by decorators and painters. Brown and green lenses improve the range of contrast. Multiple followers of the sportive style show preference to yellow lenses. No matter what type of lenses you prefer, make certain that your sunglasses are with good ultra-violet cover characteristics.
 
Ratings Average rating: (0 votes)
You must be logged in to leave a rating.
Comments

No Comments Yet.


You must be logged in to leave a Comment.
Posts added to our Facebook Page