Check lens quality

 The first thing to check when buying Sunglasses Sale lens quality, lens surface is smooth, there is no warping, wear marks, bubbles, lens warping will cause eye deviation, uneven or traces, bubbles, will cause dizziness and other discomfort. At the same time, the lens can not be too thin, or high temperature deformation will also cause dizziness.

When choosing, you can take the Sunglasses Outlet 45 centimeters away from your eyes and observe the vertical line and horizontal line around your glasses, such as window frame or door frame, and then move the glasses up and down, such as straight line distortion or swing, indicating that the glasses are out of shape and should not be purchased. Tags: Small brands are often ignored, in fact, in addition to telling you the origin of glasses on the tag, but also hidden a lot of useful information, especially to see whether the tag has QS logo. UV index: to Prescription Sunglasses, UV index is the effect of filtering ultraviolet light, it is a very important standard. Most Sunglasses For Sale currently have a UV index of 96 to 98 percent, with dark lenses being better than light ones.