Lenses
Eyeglasses are available to help people with many types of vision problems, including nearsightedness (myopia), farsightedness (hyperopia), and issues with central vision. The lenses are the part of the glasses that determine what problem is targeted. Therefore, the primary lens types include:
- Single Vision Lenses – Most often used for general myopia and hyperopia, but target only one or the other
- Bifocal Lenses – Two lenses in one to correct both myopia and hyperopia
- Trifocal Lenses – Three lenses in one for near, far, and middle distances
- Progressive Lenses – Like bifocals or trifocals without visible lines
- Toric and Prism Lenses – Therapeutic lenses for problems with astigmatism and heterophoria
