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Presbyopia is the primary reason that
nearly everyone after their mid-40's uses bifocals, reading glasses,
or removes their distance glasses in order to read at a comfortable
distance. Prior to the development of SRP,(Surgical Reversal of
Presbyopia) external lenses such as bifocals and reading glasses were
the principal alternatives available to counter the effects of
presbyopia.
Presbyopia is the
inability to focus on near objects that requires you to wear reading
glasses or bifocals.
Opthamologist
(eye doctors) disagree about what causes presbyopia; most
believe it's caused either by stiffening of the eye's lens,
continued growth of the lens or atrophy of the muscles controlling
the lens, but other theories exist
as well. |
