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  2. 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.

  3. Prism correction - Wikipedia

    en.wikipedia.org/wiki/Prism_correction

    Prism lenses (here unusually thick) are used for pre-operative prism adaptation. Eye care professionals use prism correction as a component of some eyeglass prescriptions. A lens which includes some amount of prism correction will displace the viewed image horizontally, vertically, or a combination of both directions.

  4. 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, and they can be worn to correct vision or for cosmetic or therapeutic reasons.

  5. Eye Vision Correction: Permanent Contact Lens Is Lasik ... - AOL

    www.aol.com/eye-vision-correction-permanent...

    Implantable contact lenses correct vision, including extreme nearsightedness; stay in the eye without maintenance. Patient describes experience with EVO lens.

  6. Eyeglass prescription - Wikipedia

    en.wikipedia.org/wiki/Eyeglass_prescription

    Positive meniscus lenses provide positive diopters, while negative meniscus lenses provide negative diopters. Every corrective lens prescription includes a spherical correction in diopters . Convergent powers are positive (e.g., +4.00 D) and condense light to correct for farsightedness/long-sightedness ( hyperopia ) or allow the patient to read ...

  7. Zenni Optical - Wikipedia

    en.wikipedia.org/wiki/Zenni_Optical

    The company sells more than 2,000 types of prescription glasses and sunglasses but does not sell contact lenses. Zenni created theme glasses through collaborations with professional gamers, sportspeople, the designer Iris Apfel and the actress Rashida Jones.