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