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  3. List of soft contact lens materials - Wikipedia

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

    The US Food and Drug Administration (FDA) defines soft contact lenses as: made of soft, flexible plastics that allow oxygen to pass through to the cornea. Soft contact lenses may be easier to adjust to and are more comfortable than rigid gas permeable lenses.

  4. America's Best Contacts & Eyeglasses - Wikipedia

    en.wikipedia.org/wiki/America's_Best_Contacts...

    America's Best Contacts & Eyeglasses is a discount provider of eye examinations, eyeglasses and contact lenses, with over 900 retail locations in the United States as of 2023. From 2005 to 2014, America's Best was a division of National Vision , a privately held portfolio company owned by Berkshire Partners .

  5. 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 ...

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

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

    Long-term contact lens use can lead to alterations in corneal thickness, stromal thickness, curvature, corneal sensitivity, cell density, and epithelial oxygen uptake, etc. Other changes may include the formation of epithelial vacuoles and microcysts (containing cellular debris) as well as the emergence of polymegethism in the corneal endothelium.

  7. List of Nikon F-mount lenses with integrated autofocus motor

    en.wikipedia.org/wiki/List_of_Nikon_F-mount...

    Nikon AF-S Nikkor 50mm f / 1.4G back showing eight electrical contacts. Typical AF-S lenses have 7–10 contacts (with VR: 10) increased from about five contacts from AF or AF-D lenses. Mid-range. Nikon AF-S DX Nikkor 35mm f / 1.8G; Nikon AF-S Nikkor 35mm f / 1.4G; Nikon AF-S Nikkor 35mm f / 1.8G; Nikon AF-S Nikkor 50mm f / 1.4G; Nikon AF-S ...

  8. List of Minolta A-mount lenses - Wikipedia

    en.wikipedia.org/wiki/List_of_Minolta_A-mount_lenses

    While the "(D)" designation is used on the box and in the documentation, the lenses just feature a "D" instead. Requires 8 lens contacts; lenses with only 5 contacts cannot support this feature. DT "Digital Technology", lenses for cameras with APS-C (or Super-35mm) size sensors, only. DT lenses will not fully illuminate the sensor/film area of ...