Prescription sunglass refers to a sunglass that has the ability to protect your eyes from UV ray and offer lens power. Wearing prescription sunglasses is important because it can protect your eyes from the direct sunlight. Prolonged exposure to the sunlight can cause the cornea to get sunburn. When the cornea gets sunburn, your eyes will be subjected to blindness and other types of disease. Therefore it is important that you wear the sunglasses to protect your eyes. According to doctors, the eyes can get damaged if it is continuously exposed to the sunlight from 10 a.m. – 4 p.m. People who spend a lot of time under the sun are subjected to the greatest risk. Examples of people that has the highest risk to ultra violet ray include fishermen, and people who spend time at the beach for long hours everyday.
The ultra violet ray is a combination of two rays including UVA and UVB rays. The sunglass which you purchase must block these two rays. If the sunglasses don’t block the two rays, they won’t be able to efficiently protect your eyes. You should not assume that expensive sunglasses have higher UV ray protection. It does not mean that sunglasses with darker tint are more expensive. If the glass offers 100% UV protection, it will be stated in the label. If the label did not state the percentage of UV protection, you should avoid it. This is because it probably has little or no UV protection. If you are not sure whether the sunglass can protect your eyes, you can seek the advice of an eye care professional. The eye care professional can tell you whether the sunglass is able to provide ultra violet ray protection because he is familiar with it.
The sunglass must have dark tint. If it does not have a dark tint, it won’t be able to reduce the glare. However, it should not be too dark, so as to distort the color. If it is too dark, it will distort the color of the traffic light and cause you to violate the traffic regulation. Everyone should purchase sunglasses to protect their eyes. Children can also wear sunglasses. Parents should let their children wear sunglasses when they are playing outside. Since children are active, parents should purchase durable lens for them such as polycarbonate lens. Polycarbonate lens won’t crack when it is dropped down on the ground. It prevents the parents from buying new lens.