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  2. Hydrogen peroxide contact solutions - Wikipedia

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

    Multipurpose solutions tend to be less expensive. [7] 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. [8] Hydrogen peroxide solutions require a separate solution in ...

  3. Effects of long-term contact lens wear on the cornea - Wikipedia

    en.wikipedia.org/wiki/Effects_of_long-term...

    The effects of extended contact lens wear on the cornea have been studied extensively and are well-documented. When determining the effects of long-term contact lens use on the cornea, many studies do not differentiate between users of hard and soft contact lenses, while studies that have made this differentiation have found similar results. This is probably because most contact lens-induced ...

  4. Corrective lens - Wikipedia

    en.wikipedia.org/wiki/Corrective_lens

    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. Glasses or "spectacles" are worn on the face a short distance in front of the eye. Contact lenses are worn directly on the surface of the eye. Intraocular lenses are surgically implanted ...

  5. Otto Wichterle - Wikipedia

    en.wikipedia.org/wiki/Otto_Wichterle

    Otto Wichterle ( Czech pronunciation: [ˈoto ˈvɪxtr̩lɛ]; 27 October 1913 – 18 August 1998) was a Czech chemist, best known for his invention of modern soft contact lenses. [1] Wichterle is the author or co-author of approximately 180 patents and over 200 publications. The studies and independent books covered various aspects of organic ...

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

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

    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 for the protection of public health, and it was concluded that this ...

  7. Lens - Wikipedia

    en.wikipedia.org/wiki/Lens

    A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses ( elements ), usually arranged along a common axis. Lenses are made from materials such as glass or plastic and are ground, polished, or molded to the required shape. A ...

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