How much do you know about sunglasses? Teach you to find the most suitable sunglasses.
As the weather turns hot, a variety of fashion sunglasses began to appear, not only can be shade, sunscreen can also be loaded with cool shape, even children's sunglasses have become a must-have for many families.
It is important to prevent cataracts and to wear sunglasses.
The hair dryer blows to the eyes and is easy to induce cataract. Chen Yufang, director of the ophthalmology department of the New North City United Hospital, denied the rumor yesterday and pointed out that it is very important to wear sunglasses if it is to prevent cataracts.
Polarization can be divided into three types, namely linear polarization, elliptically polarized light and circularly polarized light. Generally speaking, polarized light refers to linear polarized light, also known as planar polarized light.