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  2. Orthokeratology - Wikipedia

    en.wikipedia.org/wiki/Orthokeratology

    Orthokeratology lens. Orthokeratology, also referred to as Night lenses, Ortho-K, OK, Overnight Vision Correction, Corneal Refractive Therapy (CRT), Accelerated Orthokeretology, Cornea Corrective Contacts, Eccentricity Zero Molding, and Gentle Vision Shaping System (GVSS), is the use of gas-permeable contact lenses that temporarily reshape the cornea to reduce refractive errors such as myopia ...

  3. Refractive surgery - Wikipedia

    en.wikipedia.org/wiki/Refractive_surgery

    Refractive surgery is an optional eye surgery used to improve the refractive state of the eye and decrease or eliminate dependency on glasses or contact lenses.This can include various methods of surgical remodeling of the cornea (keratomileusis), lens implantation or lens replacement.

  4. Does Medicare cover the cost of contact lenses? - AOL

    www.aol.com/lifestyle/does-medicare-cover-cost...

    Medicare-covered corrective lenses include one pair of eyeglasses with standard frames or one pair of contact lenses. Out-of-pocket costs will be due, and there may be additional costs for ...

  5. Contact lens - Wikipedia

    en.wikipedia.org/wiki/Contact_lens

    Contact lenses, or simply contacts, are thin lenses placed directly on the surface of the eyes. Contact lenses are ocular prosthetic devices used by over 150 million people worldwide, [ 1 ] and they can be worn to correct vision or for cosmetic or therapeutic reasons. [ 2 ]

  6. Corrective lens - Wikipedia

    en.wikipedia.org/wiki/Corrective_lens

    A pair of contact lenses, positioned with the concave side facing upward A corrective lens is a transmissive optical device that is worn on the eye to improve visual perception . The most common use is to treat refractive errors : myopia , hypermetropia , astigmatism , and presbyopia .

  7. Why astigmatism causes blurry vision, especially at night - AOL

    www.aol.com/news/why-astigmatism-causes-blurry...

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