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  2. List of soft contact lens materials - Wikipedia

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

    The first contact lenses were made of glass, in 1888. Initially the glass was blown but soon lenses were made by being ground to shape. For the first fifty years, glass was the only material used. The lenses were thin, yet reports of injury were rare. In 1938 perspex (polymethylmethacrylate, or PMMA) began to replace glass in contact lens ...

  3. 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 ...

  4. Shawarma Shack - Wikipedia

    en.wikipedia.org/wiki/Shawarma_Shack

    The Shawarma Shack is a Philippine food franchise known for its "buy one, get one free" shawarma wraps. It started on February 21, 2015, as a nightly ambulant food stand in Divisoria, Manila operated by Walther Uzi Buenavista and Patricia Collantes. [1] As of 2021, it has over 500 outlets and 600 employees throughout the Philippines. [1] [2]

  5. Scleral lens - Wikipedia

    en.wikipedia.org/wiki/Scleral_lens

    Scleral contact lens, ocular surface prostheses. [edit on Wikidata] A scleral lens, also known as a scleral contact lens, is a large contact lens that rests on the sclera and creates a tear -filled vault over the cornea. Scleral lenses are designed to treat a variety of eye conditions, many of which do not respond to other forms of treatment.

  6. Acuvue - Wikipedia

    en.wikipedia.org/wiki/Acuvue

    Acuvue lenses got their start at Frontier Contact Lens Company, founded in Buffalo, New York in 1959 by Dr. Allen Isen, George Sitterle, and Dr. William Feinbloom. [1] Its early growth was attributed to its highly successful toric lens. In 1962, Seymour Marco joined the venture and Frontier moved its operations to Jacksonville, Florida. [2]

  7. 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.

  8. Buy one, get one free - Wikipedia

    en.wikipedia.org/wiki/Buy_one,_get_one_free

    The economist Alex Tabarrok has argued, that the success of this promotion lies in the fact that consumers value the first unit significantly more than the second one. So compared to a seemingly equivalent "Half price off" promotion, they may only buy one item at half price, because the value they attach to the second unit is lower than even the discounted price.

  9. Burger Machine - Wikipedia

    en.wikipedia.org/wiki/Burger_Machine

    Founded. 1981; 43 years ago (1981) Headquarters. Philippines. Parent. Gilmore Food Corporation. Burger Machine is a Filipino chain of fast-food restaurants owned by the Burger Machine Holdings Corporation, a sub-company of the Philippine-based Gilmore Food Corporation. The chain is notable for its outdoor stalls commonly located along streets ...

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