To distinguish the quality of the sunglasses for UK women lenses to be light sunglasses, sunglasses lens view is not smooth appearance, no bump, no wear and bubble. If there are more problems, then the lens may have some damage. Wear prone to dizziness and so on.
Distinguish sunglasses with best sales lenses is not required to be horizontal deformation observation lens sunglasses, the tilt is the same degree. Take sunglasses, according to the 45 cm of the eyes, through the glasses to see the vertical and horizontal lines. The lens can also be solved by this method.
Check the cheap sunglasses frames, see the welding point has no crack, is not strong; can be used to pull the nails slightly, observe the surface is easy to damage, TR plate frames, observe his appearance is no particles, scratches, or rough.