Presbyopia is part of the natural aging process of the eye, and can be easily corrected. Technically, presbyopia is the loss of the eye’s ability to change its focus to see objects that are near. It is not a disease. It’s as natural as wrinkles, and it affects everybody at some point in life. Presbyopia generally starts to appear around age 40.
Presbyopia is often confused with farsightedness, but the two are different. Presbyopia occurs when the eye’s lens loses flexibility. Farsightedness occurs as a result of the shape of the eyeball, which causes light rays to bend incorrectly once they have entered the eye.
Symptoms of presbyopia include:
An eye doctor can diagnose presbyopia by a thorough eye exam.
Presbyopia cannot be cured. Instead, prescription glasses, contact lens, reading glasses, progressive addition lenses, or bifocals can help correct the effects of presbyopia.
Bifocals are often prescribed for presbyopia. Bifocals are eyeglasses that have two different prescriptions in one spectacle lens. The main part of the lens contains a prescription for nearsightedness or farsightedness, while the lower portion of the lens holds a stronger prescription to help a person see objects up close.
Progressive addition lenses are similar to bifocals, but have a more gradual shift between the two prescriptions.
Contact lenses that are used to treat presbyopia include multifocal lenses, which come in soft or gas permeable versions, and monovision lens, in which one eye wears a lens that aids in seeing objects at a distance, while the other has a lens that aids in near vision.
For patients who are having cataract surgery, there are new lens implants that offer partial correction for presbyopia as well as correcting for distance vision.
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