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Vivitar Corporation is a manufacturer, distributor, and marketer of photographic and optical equipment originally based in Santa Monica, California. [citation needed] Since 2008, the Vivitar name serves as Sakar International's house brand for digital imaging, optics, mobile accessories, and audio products.
Scleral lenses may be used to improve vision and reduce pain and light sensitivity for people with a growing number of disorders or injuries to the eye, such as severe dry eye syndrome, microphthalmia, keratoconus, corneal ectasia, Stevens–Johnson syndrome, Sjögren's syndrome, [1] aniridia, neurotrophic keratitis (anesthetic corneas), complications post-LASIK, higher-order aberrations of ...
Contact was released on LaserDisc, VHS and the (then new) DVD format in December 1997. Among the special features are three audio commentaries: by director Zemeckis and producer Starkey, by visual effects supervisors Ken Ralston and Stephen Rosenbaum, and by star Jodie Foster. [34] Contact was released on Blu-ray Disc on October 6, 2009 ...
For contact lenses related hypoxia, ceasing the use of contact lenses is the first step until corneal neovascularization is addressed by a physician. Modern rigid gas permeable and silicon hydrogel contact lenses have a much higher level of oxygen transmissibility, making them effective alternatives to help prevent corneal neovascularization.
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 ...
Jupiter-3 50 mm f /1.5 lens. The Jupiter-3 lens is derived from Zeiss Sonnar optical design. It has seven elements in three groups. [1] This lens is the fastest Jupiter lens, having a maximum aperture of f/1.5.
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