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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. Circle contact lens - Wikipedia

    en.wikipedia.org/wiki/Circle_contact_lens

    Circle contact lenses aim to create the illusion of stronger limbal rings (shown here are naturally prominent limbal rings without circle contact lenses). The diameter of regular contact lenses that are sold in the United States are on average 14–16 mm. Similar to the diameter of regular contact lenses, circle lenses have no more than 15 mm ...

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    Yahoo faz parte da família de marcas Yahoo. O Yahoo coletará e usará seus dados como parte dos serviços oferecidos, para entender seus interesses e oferecer e mensurar anúncios personalizados.

  5. Nikon EM - Wikipedia

    en.wikipedia.org/wiki/Nikon_EM

    The EM accepts nearly all lenses with the Nikon F bayonet mount except lenses introduced in 1959, non-ai lenses will damage the lensmount, it does support the automatic indexing (AI) feature introduced in 1977. [citation needed] The contemporary Nikon-made AI lenses were the Nikkor AI-S, Nikkor AI and Nikon Series E types. The AF-S Nikkor, AF-I ...

  6. Verification and validation - Wikipedia

    en.wikipedia.org/wiki/Verification_and_validation

    Verification is intended to check that a product, service, or system meets a set of design specifications. [6] [7] In the development phase, verification procedures involve performing special tests to model or simulate a portion, or the entirety, of a product, service, or system, then performing a review or analysis of the modeling results.

  7. List of soft contact lens materials - Wikipedia

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

    In the US market, soft contact lenses are approved by the US Food and Drug Administration. [2] The American Optometric Association published a contact lens comparison chart called Advantages and Disadvantages of Various Types of Contact Lenses on the differences between them. [3] These include: soft contact lenses; rigid gas-permeable (RGP ...

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