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  2. 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.

  3. List of Konica Minolta A-mount lenses - Wikipedia

    en.wikipedia.org/wiki/List_of_Konica_Minolta_A...

    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 24x36mm full-frame cameras. G "Gold" series, Minolta's line-up of high-grade lenses.

  4. Optical power - Wikipedia

    en.wikipedia.org/wiki/Optical_power

    Converging lenses have positive optical power, while diverging lenses have negative power. When a lens is immersed in a refractive medium, its optical power and focal length change. For two or more thin lenses close together, the optical power of the combined lenses is approximately equal to the sum of the optical powers of each lens: P = P 1 ...

  5. Scleral lens - Wikipedia

    en.wikipedia.org/wiki/Scleral_lens

    Scleral lenses are removed using the fingers, or a small lens removal plunger. Lenses are then cleaned and sanitized before reinsertion. Scleral lenses cannot be worn while sleeping and many wearers sanitize their lenses overnight. Unlike regular contact lenses, many sclerals can be stored dry when unused for longer periods of time.

  6. Daily News (Tanzania) - Wikipedia

    en.wikipedia.org/wiki/Daily_News_(Tanzania)

    Daily News has a Kiswahili sister paper Habari Leo, which was established in 2007. It is in tabloid form, unlike the Daily News which together with the Sunday News are all broadsheets. The papers are produced both in print and online. On 30 December 2011, Daily News announced its intention to launch a newly designed website. The move was aimed ...

  7. Jupiter (lenses) - Wikipedia

    en.wikipedia.org/wiki/Jupiter_(lenses)

    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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