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  2. 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. Newer soft lens materials include silicone-hydrogels to provide more oxygen to your ...

  3. Hoya Corporation - Wikipedia

    en.wikipedia.org/wiki/Hoya_Corporation

    Hoya Corporation. Hoya Corporation (Hoya株式会社, Hōya Kabushiki-gaisha) is a Japanese company manufacturing optical products such as photomasks, photomask blanks and hard disk drive platters, contact lenses and eyeglass lenses for the health-care market, [4] medical photonics, [5] lasers, photographic filters, medical flexible endoscopy ...

  4. Valmiki Corporation scam (Karnataka) - Wikipedia

    en.wikipedia.org/wiki/Valmiki_Corporation_scam...

    The Valmiki Corporation scam was a major Indian financial fraud scam involving the Karnataka Maharshi Valmiki Scheduled Tribes Development Corporation (KMVSTDC) that occurred in 2024. [ 1 ] The scam was discovered after the suicide of 52-year-old corporation superintendent Chandrasekaran P. who left behind a suicide note detailing corruption ...

  5. Adjustable-focus eyeglasses - Wikipedia

    en.wikipedia.org/wiki/Adjustable-focus_eyeglasses

    Adjustable focus eyeglasses are eyeglasses with an adjustable focal length. They compensate for refractive errors (such as presbyopia) by providing variable focusing, allowing users to adjust them for desired distance or prescription, or both. Current bifocals and progressive lenses are static, in that the user has to change their eye position ...

  6. Canon PowerShot SX50 HS - Wikipedia

    en.wikipedia.org/wiki/Canon_PowerShot_SX50_HS

    Capable of recording 1920x1080 video at up to 30fps, slow motion of 240 fps. The Canon PowerShot SX50 HS is a 12.1 megapixel PowerShot model camera made by Canon. It features a large built-in 50x zoom lens which is equivalent to a focal length of 24-1200mm. Succeeding the Canon PowerShot SX40 HS, [ 1][ 2][ 3] it was announced in October 2012.

  7. Sony FE 24-70mm F2.8 GM II - Wikipedia

    en.wikipedia.org/wiki/Sony_FE_24-70mm_F2.8_GM_II

    Lens with and without protuded tube The Sony FE 24-70mm F2.8 GM II comes with three rings in total, one for manual focus, one for zoom and one slimmer for aperture , which is new in this generation. One slider with "smooth" and "tight" allows a more or less resistant rotation of the zooming ring.

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