Glasses is vision correction or eye protection and easy production of optical devices, composed by the lens and frame. There are 4 kind glasses can corrected visual acuity: myopic glasses, hypermetropia glasses, presbyopic glasses, and astigmatism glasses.
Eyeglasses is not only an eye protection, but also a decoration. Glasses in people’s lives will play an important role.
The type of glasses lenses: anti-reflective lenses, color lenses, polarized lenses, progressive lenses, and coloring lenses.