A Handbook In Selecting Glasses

You’ll wonder where the yellow went when you brush your teeth with Pepsodent.
Sunglasses have already been a necessity for fashion lovers, who collect all kinds of sunglasses crazily. What should you pay attention to when buying sunglasses in order to protect your 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. Besides the lash doesn’t touch the lens is also one of the yardsticks.

Do not select the too small lenses, which will decrease the effect of separating the light. Observe closely whether the lens have scratches, impurity, bubbles and stripes. Check the sunglasses` packing, formal sunglasses should be marked with product`s name, color, diameter, quality levels, producer`s name and trademark, The lens or brand that marked with the symbol of UVA, UVB or CE are sure to prevent a centain quantity of ultraviolet radiation.

The lens are supposed to be flat and the dialysis level should be high. The materials of making sunglasses are glass and resin. However, the best ispolarized lens. The sunglasses color should be selected in addition according to your skin color, face shape, dressing, you must also choose according to the places you are going.

In general, black, brown and gray have decent effects of filtering sunshine. Gray lenses can absorb any chromatogram equally, after wearing the sunglasses, the colours of the objects will become dark instead of changing. Brown colored lenses can filter lots of blue light and can improve the visual contrast and definition. It has an especially good effect when wearing in polluted air and foggy days.

You need a pair of sporty sunglasses when doing water sports in the seaside, or the snow land where glistening is strong or under strong sunshine. Most of them adopt flashy and bright saturation colours which can absorb or reflect more visible light.

In addition to reducing glare stimulation and making the eyes comfortable, the main purpose of wearing sunglasses is to prevent the ultraviolet damage to the eyes. And the lens color is different from screening UV, even though the lens color is darker, it may not be more effective in anti-UV. So you must choose lenses marked the function of preventing UV. Usually, the UV index of sunglasses is from 96 to 98 percent.