Suggestions for Buying Sunglasses

Inferior sunglasses see not clear cannot withstand ultraviolet ray again already, its result is pupil dilate, make eye lens absorbs more ultraviolet ray, must choose the shopkeeper with good credit so to buy.So what should you pay attention to when buying sunglasses?

1. First observe whether there are scratches, impurities, bubbles, stripes, check the outer packaging of sunglasses, regular sunglasses should be marked with the product name, color, diameter, quality level, the name of the manufacturer and trademark, mirror or tag marked on the UVA, UVB and CE mark to ensure that the sunglasses block certain uv.

2. Try on sunglasses to get a sense of dizziness and headaches.The myopia sunglass that also has a few to indicate degree on market now is sold, because pupil is apart from the index because of the person however different, if do not have the guidance of professional personage so, consumer had better not choose this kind of sunglass that has degree.

3. Hold the two corners of your sunglasses in front of the fluorescent lamp and let the reflective strip roll gently. If you find that the reflection of the sun lamp appears wavy and distorted, it proves that the lens is not smooth, and such a mirror will damage your vision.

4. The lenses should be smooth and clear. The solar lenses are made of glass and resin.It is made of synthetic resin, as light and precise as a contact lens.The second and sixth layers are the anti-crushing strengthening layer;The third and fifth layers are ultraviolet filter layers and the middle layer is polarizing filter layer.Polarizing lens can effectively filter reflected light and harmful ultraviolet rays, and has anti-crushing, anti-wear and other functions, is the most popular sunglasses.

5. The colour of sunglass besides the color of skin that basis oneself, face, dress will match outside, still should choose according to the place that go out.In general, black, tan, gray filter effect is good;The grey lens can absorb any color spectrum equably, and the scene will only become dark without obvious color difference.Tawny lenses filter out large amounts of blue light and improve visual contrast and sharpness, especially in heavy air pollution or foggy conditions.

6. What shades of sunglasses suit us?A simple self-test is to put on sunglasses in front of a mirror and limit yourself to the pupils of your eyes.Too light color filter is too small;Too dark colors affect vision and weaken color sense.This year's popular colorful light-colored sunglasses, do not use in the seaside water activities, reflective strong snow and sunshine is very strong under the sun, and should wear sports sunglasses, they mostly use colorful saturated color, can absorb or reflect more visible light.

7. Wearing sunglasses in addition to reduce the stimulation of strong light, make the eye comfortable, the main purpose is to prevent ultraviolet rays to cause harm to the eyes, and the color of the lens and whether to prevent ultraviolet rays are two different things, even if the lens color is deep, may not be effective in preventing UV, so must choose to label the lens with anti-uv function.Sunglasses usually have a UV index of 96 to 98 percent.

8. General regular eyeglasses shop can have the instrument that detects sunglass to resist ultraviolet ray ability size, through this detect, you can know whether the glasses in the hand is helpful to your eye health.