uv ratings sunglasses how to understand

Fashion aside, sunglasses serve an important purpose: protecting eyes from the harmful rays produced by the sun. You're probably well aware of the need to protect your skin from the sun, but your eyes are just as important, if not more so.

The dangers of Ultraviolet Radiation: Ultraviolet (UV) radiation consists of invisible rays from the sun. The three bands of UV light are: UV-A, UV-B and UV-C.

UV-C (253.7nm wavelength) causes skin redness and eye irritation, but not considered to be dangerous.

UV-B is the most dangerous of all, it’s the one that will burn the skin and can damage the eyes. High levels of exposure, even for a short time as the potential to cause "snow blindness” ,a temporary condition but very painful. Although not all scientists agree, there is some research that suggests that daily exposure to UVB in very bright sunlight over a period of many years may cause cataracts a gradual clouding of the lens of the eye. Perhaps no surprise then, these common eye conditions are so prevalent in countries like Africa. Experts also suspect that the primary cause of eye growths such as pingueculae or pterygia is exposure to UVB rays.

UV-A (Blacklight) rays are primarily absorbed within the lens of the human eye, though there are no documented disorders of the human eye from UV-A. This, however, remains a much debated and researched topic, says the Sunglass Association of America (SAA).

After all the Science, this is what we do at UK eyewear, we ensure that all our products are block 400 nanometers or commonly referred to has 100% (UV protected) So not only will all our eyewear make vision more comfortable by cutting the glare, but they also kill any harmful (UV). And by choosing the right lens it will sharpen light, contrast, depth of field and vision. GO TO ACCESSORIES TO LEARN ABOUT INDEVIDUAL LENSES

Our advise, we offer many makes and models of eyewear for most sports activities. As with all your equipment you should spend as much as you can afford, above all choose eyewear that is up to the job. Understand which lens is best suited for you and your sport, consider a multi-lens system, that way no matter what the light conditions you will have good, safe vision. Finally there is nothing wrong in wanting to look good, so we take care to offer products that you will also look cool.

Browsing around the store you will see many types of eyewear and lenses, a lenses that is worthy of further explanation is the Ballistic rated lens. These lenses are a minimum of 2.1mm thick, great care is taken to ensure the precise amount of dye is used in the manufacturing process, eliminating eye fatigue and strain. Each lens is made from pure shatterproof selenite UV treated polycarbonate and far exceeds ANSI Z87.1 safety and ANSI Z80.3 optical standards.  Ballistic lenses are made using special formulates and die-cuts to eliminate distortion, giving the user perfect optical clarity.

And we couldn’t leave it there without offering a few words of caution: A dark lens tint does not necessarily mean that the lens blocks UV rays. If you are outside, don’t buy any sunglasses that aren’t 100% UV rated. Some prescription and over-the-counter drugs may make you more sensitive to UV radiation in sunlight. Your physician, optometrist or pharmacist can advise you about this. UV-blocking sunglasses will reduce the chances of eye damage due to solar UV rays if you are taking photosensitizing drugs.

1. Beware of cheep sunglasses you see sold on holiday and bucket shop web-sites poor lenses have distorted reflections from the lens surfaces. These indicate that the lenses have not been ground or molded to optical quality. Lenses that show severely distorted images can cause headaches – leave them on the rack or send them back.

2. Check the quality of the frames and fit.

4. REMEMBER… At uksportseyewear.co.uk we take eye safety very seriously! Most sunglass frames and lenses are not strong enough to resist the impact of a stone or piece of debris. Broken frames and/or lenses can cause very serious eye injuries. You can get both impact and UV protection from your eyewear and in the latest wraparound styles.