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  2. Contact lens - Wikipedia

    en.wikipedia.org/wiki/Contact_lens

    A pair of contact lenses, positioned with the concave side facing upward. Putting contacts in and taking them out. One-day disposable contact lenses with blue handling tint in blister-pack packaging. Contact lenses, or simply contacts, are thin lenses placed directly on the surface of the eyes. Contact lenses are ocular prosthetic devices used ...

  3. List of soft contact lens materials - Wikipedia

    en.wikipedia.org/wiki/List_of_soft_contact_lens...

    Lenses made of PMMA are called hard lenses. [5] Soft contact lenses were first produced in 1961 by Czech chemical engineer Otto Wichterle using polyhydroxyethylmethacrylate (pHEMA), a material that achieved long-term commercial application. Lenses made of polyacrylamide were introduced in 1971. [5]

  4. Bionic contact lens - Wikipedia

    en.wikipedia.org/wiki/Bionic_contact_lens

    A bionic contact lens is a proposed device that could provide a virtual display that could have a variety of uses from assisting the visually impaired to video gaming, as claimed by the manufacturers and developers. [1] The device will have the form of a conventional contact lens with added bionics technology in the form of a head-up display ...

  5. 1-800 Contacts - Wikipedia

    en.wikipedia.org/wiki/1-800_Contacts

    1-800 Contacts. 1-800 Contacts Inc. is an American contact lens retailer based in Draper, Utah. The brands that 1-800 Contacts use includes Johnson & Johnson Vision Care, Alcon, Bausch & Lomb and CooperVision. The company was founded as the industry's first way to buy contacts online and has since expanded to provide online prescription ...

  6. Zenni Optical - Wikipedia

    en.wikipedia.org/wiki/Zenni_Optical

    Website. www .zennioptical .com. Zenni Optical (formerly 19dollareyeglasses.com) is an American online retailer of prescription glasses and sunglasses. Founded in 2003 by Tibor Laczay and Julia Zhen, it is based in Novato, California . The company sells more than 2,000 types of prescription glasses and sunglasses but does not sell contact lenses.

  7. Orthokeratology - Wikipedia

    en.wikipedia.org/wiki/Orthokeratology

    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, hyperopia, and ...

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