Prescription Sunglasses Direct | Discount Prescription Sunglasses

Ultraviolet ray is a dangerous ray that can cause the eyes to suffer from diseases. If you want your eyes to be healthy, you must take care of them. One way to take care of your eyes is by wearing the sunglasses. There are two types of ultraviolet rays including ultraviolet A and B rays. Two popular lenses are used to make prescription sunglasses including polarized and photochromatic lenses. Polarized lens consists of a thin layer of chemical film. (more…)

The following are the steps to determine polarized sunglasses:

Step 1, take the same two pair polarized sunglasses (the owner claimed the polarized sunglasses).

Step 2, holding a pair of glasses by each hand, first overlap the two glasses horizontally, now you can see the opposite thing through the two overapped lens overlap. (more…)