It is a necessity to buy a pair of sunglasses in summer days, however, ones of poor quality not only couldn’t prevent ultraviolet radiation, but also more importantly, do harm to our precious eyes. They are possible to make the pupil of your eyes dilate, instead lenses of eyes would absorb more UV. Therefore, sunglasses are not dispensable accessories. For the eye health, it is a must to choose the best sunglasses for you and your love. Then comes to the question how to choose the best sunglasses. The following is to help to give your the answer.
What are the tips for choosing the color of sunglasses?
The first and foremost tip is to notice whether there are UV-stop labels. Well qualified sunglasses would be labelled with “100% UV-stop”, “UV400” or “UV cut”. Sunglasses of poor quality are more likely to bring harm to eyes. Next, gray, brown and green color lenses are more recommended, for those lenses have a comparatively better ability to absorb infrared ray and ultraviolet radiation. Into the bargain, gray lenses could present the wearers a vision of little chromatic aberration; brown lenses are able to filter much blue-ray, which could improve the contrast and sharpness of the vision. They perform especially well in foggy days or in environment where the air is severely polluted.
Is it a must to wear sunglasses when one goes out in a sunny day?
It is necessary to wear sunglasses when the sunlight or the reflection is too strong, or it is not necessary. It depends on the strength of the sunlight or reflection outside, but not on the seasons. Something else needing attention is that sunglasses is a must when one goes to an area most of which is covered by snow or water.
Are children suitable to wear sunglasses?
Children can wear sunglasses, because their eyes are delicate. If exposed to the sun for too long time, their eyes would get damaged. In this sense, children need to wear sunglasses more, but they should not wear for a long time. Or lazy eyes would be caused. The correct method should be to put sunglasses on for them when the sunlight is strong and take off timely when the sunlight get weak.
What common eye diseases would be prevented if we wear sunglasses in a scientific way?
Conjunctival congestion, niphablepsia, cataract, macular degenration, and some other chronic eye diseases.
As a matter of fact, every pair of well qualified sunglasses would become your best sunglasses, if you follow the advices given above.