subject: How to choose sunglasses [print this page] How to choose sunglasses How to choose sunglasses
We can judge from the name that sunglasses are used to protect your eyes from the radiation of sun. If your eyes are over-exposed to UV rays from the sun, you would have serious eye problems that may not become apparent until you are much older. Generally, the young are more susceptible to sun exposure than the old because they spend more time outdoors.
People's eyes are more susceptible to UV-related skin cancer than other parts of the body, so that extra protection is very essential. You should wear sunglasses under the sun, especially at midday when UV rays are most strong. Many studies show that UV rays cause cataracts and also damage the cornea. People who don't wear sunglasses or brimmed hats are prone to suffer cataracts. Short-wavelength visible light has slightly less energy, but it may lead to macular degeneration. Because tanning lamps also transmit UV rays, you'd better use the protective eyewear because regular sunglasses don't provide adequate protection against multi-directional UV rays in tanning booths.
Choosing a suitable sunglasses is a big task. Fortunately, sunglasses which provide excellent UV filters are not always expensive. It means that UV protection is not closely related to the price of sunglasses. As UV protection is separated from the color of the lens, you can choose the color based on personal tastes. If you require acute vision, brown lenses can be your choice which can enhance contrast. But you should be aware that some traffic light colors will be covered by the lens color. Besides, you need to take darkness of the lens into account. On bright days, dark sunglass lenses are more helpful.
There is another kind are the kind that enables you to enjoy outdoor activities. They are Photochromic lenses .Although they block a significant amount of UV rays, sometimes they may not darken to your satisfaction. In this case, you can consider a customized pair of clip-on sunglasses. During driving, you can choose gradient lenses which have different degrees of darkness in different areas of the lens. But these lenses don't provide effective protection from glares caused by light reflection. For extremely bright conditions, mirrored lenses are a great choice.
It is an important factor to have qualified frames and lenses. Make sure that there is no distortion throughout the lenses. You should check frames careful and be sure whether they fit you best. You can choose sunglasses with large lenses for the best protection against UV rays.
