The Overlook In Picking Sunglasses

Sunglasses have become necessities for fashion followers. They will buy various kinds of sunglasses crazily. What should be paid attention to in selection of bifocals so as to protect the eyes better?

Do not buy acrylic lenses that are easy to deform due to heat, the best choice is glass material or resin. Glasses should be appropriately posted on the ridge of the nose and ears, if you feel a little inclined to one side, adjust it immediately. In addition, "eyelashes do not touch the lens" is also a measure of the standards.

Don't choose the sun glasses with too small galss, this will less the effect of the glass with blocking the sun lights. Observe if there is nick, impurity, air bubble or stripe on lenses. Check the cheap bifocals’ packing, formal sunglasses should be marked with product’s name, color, diameter, quality levels, producer’s name and trademark, Sun glasses with the sigh of preventing UVA, UVB and CE on the glass surface or the name tag can make sure the certain block of ultraviolet.

The lenses should be flat with a high degree of penetration, the glasses materials include glass and resin, the best sunglasses should use polarized lenses. We need to choose sunglasses according to situations besides your skin color, face shape and clothes.

In general, black, brown and gray have decent effects of filtering sunshine. Brown glasses can absorb any colors in balance. The sight after wearing the glasses will only be darker instead of changing colors. The brown lens is able to filter out a large number of blue lights and can improve visual contrast and clarity. What is more, it gets a better effect under the serious polluted air and foggy days.

If you need to sport on the beach or the snow land which reflect lights heavily and the places where the sunshine is intense, sport sun glasses should be put on. Most of which are bright saturation colored that can absorb or reflect more visible light.

Wearing cheap progressive glasses can deduce the sitimulate of the strong lighs and makes the eyes feel comfortable, the main aim is to provent the eye from the damage of the ultraviolet. The lens color and whether it can resist the UV is different, even if the lens color is deep, it may not resist UV effectively. As a result, you must choose lens marked with the function of preventing UV. Usually, the UV index is 96% to 98%.