Eyeglasses come in a variety of types. This includes a single-vision lens with one power or strength over the entire lens, or a bifocal or trifocal lens with multiple strengths over the entire lens.

Lenticular lenses are a type of lens used to make eyeglasses. They’re rarely used, but they can be of great benefit when you need them. Eyeglass manufacturers produce these lenses to correct severe ...