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Bifocals, Trifocals, and Progressives

Presbyopia is the normal, age-related loss of near focusing ability that makes reading and other close-up tasks more difficult after age 40.

This means that the usual type of eyeglass lenses you've likely been accustomed to wearing, known as single vision lenses, no longer will work well for you.

Multifocal eyeglass lenses available for presbyopia correction include:

  • Bifocals: Lenses with two powers – one for distance and one for near – separated by a visible line.
  • Trifocals: Lenses with three powers for seeing at varying distances – near, intermediate and far – separated by two visible lines.
  • If you see well in the distance without the need for eyeglasses, simple reading glasses with single vision lenses may be all you need to deal with near vision problems caused by presbyopia.