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  2. List of soft contact lens materials - Wikipedia

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

    Below is a list of most contact lens materials on the market, their water percentage, their oxygen permeability rating, and manufacturer brands. [14] [15] [16] [17] Note that the higher the oxygen transmissibility rating, the more oxygen gets to the eye.

  3. 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.

  4. 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.

  5. List of digital camera brands - Wikipedia

    en.wikipedia.org/wiki/List_of_digital_camera_brands

    Vision Research - High speed digital cameras, Marketed under the "Phantom" brand. Wildgame - trail cameras and action cameras; JETE - Webcam; Advan - Smartphones; Zenit - Announced that it was resuming camera and lens production for the M-mount, as well as for unspecified Nikon and Canon mounts in 2019; Bosma - Digital cinema cameras; Defunct ...

  6. Oxygen permeability - Wikipedia

    en.wikipedia.org/wiki/Oxygen_permeability

    Oxygen permeability (OP) is a parameter of a contact lens that expresses the ability of the lens to let oxygen reach the eye by diffusion. In soft contact lenses, it is dependent on the thickness of the lens and the material of the lens, especially concerning the water content.

  7. Optical resolution - Wikipedia

    en.wikipedia.org/wiki/Optical_resolution

    Only the very highest quality lenses have diffraction-limited resolution, however, and normally the quality of the lens limits its ability to resolve detail. This ability is expressed by the Optical Transfer Function which describes the spatial (angular) variation of the light signal as a function of spatial (angular) frequency.

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