key features in the purchase of sunglasses

Many people wear sunglasses, but most people don't know what kind of sunglasses is the best. Anti-UV sunglasses, is a very important function, but also look to have several key features in the purchase of sunglasses. If you are looking for a high quality sunglasses, this guide will provide you some tips, you should know!
A pair of sunglasses with UV protection is the most important feature of. Ultraviolet, UV is very dangerous to our eyes, because they can damage our eyes. From UV damage is most common is the result of cataract, it is not pleasant experience. Therefore, always be aware of sunglasses UV one-stop performance.
When buying sunglasses, many people have neglected to find out, if the glasses will be distorted image or now. In fact, many people don't think of it at the time or do not know can distort the image of glasses. I always suggest no distortion of the glasses, this option will not change the actual image. Cheap sunglasses, may change the image, which may lead to the blind spot in the optical field. You may also experience some dizziness, when you take off your glasses, you need to adjust the normal eyes.
Comfortable sunglasses are very important, especially for athletes. Looking for a pair of lightweight, comfortable sunglasses, because it is crucial. A pair of sunglasses ideal should feel you are not wearing anything! And a lot of sports sunglasses is, they are easy to fall off, so be sure to check!
The last part to buy Sunglasses is to determine the type of lens. Is called spherical heart for this lens provides an open field the highest quality clear. They shot type, but also the most popular. Typically, they also have more light lens, because they are relatively thin materials. Please be sure to pay attention to the performance of the blue light from the lens.