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  2. Corrective lens - Wikipedia

    en.wikipedia.org/wiki/Corrective_lens

    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. Ker-Optika bt v ÀNTSZ Dél- dunántúli Regionális Intézete

    en.wikipedia.org/wiki/Ker-Optika_bt_v_ÀNTSZ_D...

    Market access test. Ker-Optika bt v ÀNTSZ Dél-dunántúli Regionális Intézete [2010] ECR, Case C-108/09 is an EU law case concerning a conflict of law between Hungarian national legislation and European Union law. The Hungarian legislation regarding the online sale of contact lenses was considered with regards to whether it was necessary ...

  4. Multifocal intraocular lens - Wikipedia

    en.wikipedia.org/wiki/Multifocal_intraocular_lens

    Intraocular lenses that correct presbyopia are divided into two main categories: [1] Multifocal IOLs: achieve near and distance vision by having two (bifocal) or three (trifocal) focal points simultaneously. The function of multifocal IOL depends on the pupil size for refractive types. The concept is based on the principle that the pupil tends ...

  5. Color blind glasses - Wikipedia

    en.wikipedia.org/wiki/Color_blind_glasses

    Color blind glasses or color correcting lenses are light filters, usually in the form of glasses or contact lenses, that attempt to alleviate color blindness, by bringing deficient color vision closer to normal color vision or to make certain color tasks easier to accomplish. Despite its viral status, the academic literature is generally ...

  6. Lenses for SLR and DSLR cameras - Wikipedia

    en.wikipedia.org/wiki/Lenses_for_SLR_and_DSLR...

    Sigma Corporation, better known for manufacturing lenses for other cameras, has made some film SLR and DSLR cameras themselves. These cameras use the Sigma SA-mount, for which Sigma makes a line of lenses. The Sigma DSLR cameras that use the SA mount are the Sigma SD9, SD10, SD14, SD15 and SD1 Merrill.

  7. Hydrogen peroxide contact solutions - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_peroxide_contact...

    Multipurpose solutions tend to be less expensive. Contacts do not have to be placed in multipurpose solutions for extended intervals, whereas contacts must be left in a hydrogen peroxide solution for hours. The main attraction of multipurpose solutions is that the same solution can clean, rinse, disinfect and store lenses.

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