1. The primary consideration of quality
The primary function of polarized sunglasses is to protect against UV rays and filter polarized light. Good polarized sunglasses lenses can block the penetration of more than 90% of UV rays. You can choose polarized sunglasses with the "UV400" best blocking UV logo; inferior polarized sunglasses, such as dark sunglasses, as the light entering the human eye darkens, the pupil of the human eye becomes larger, and more ultraviolet rays enter the eye, increase damage to your eyes.
2. Natural vision
The color selection of polarized sunglasses should be based on the principle that the color of the surrounding environment is not distorted, the edges of the object are clear, and the signals of different colors can be effectively recognized. Especially when driving sunglasses, it is safe to drive. The color of the lens is better in gray, brown, and green, because the lenses of these colors absorb infrared rays and ultraviolet rays better, which can improve visual contrast and sharpness, and are particularly effective in air pollution or fog.
3. Will there be discomfort for long-term wearing?
Genuine polarized sunglasses have to be worn comfortably; inferior lenses have no technical and functional properties at manufacture, and the lens materials are also inferior. After wearing them, they feel uncomfortable, dizzy, headache, dry eyes, stinging, etc. then you have to stop wearing this sunglasses immediately.
4. Look at the protection function of the frame
Most polarized sports sunglasses frames are veneer-shaped, which can effectively prevent wind and foreign objects from irritating the eyes during outdoor sports. In addition, the hardness of the polarized lens and the material flexibility of the frame are considered whether it will cause harm to the human body.