What Are the Different Types of Bifocal Glasses?
A bifocal lens is a lens with two focal points. Such as the prevention of myopia glasses are mainly bifocal lenses.
Bifocal lens
- A bifocal lens is a lens with two focal points. Originally
Solve the problem that presbyopia glasses can only look far away but not close.
- The visual effect at the middle distance is poor; jumping phenomenon occurs; the appearance is poor.
- There are four types of separation type, glue type, fusion type and integral type. [1]