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  2. Fresnel lens - Wikipedia

    en.wikipedia.org/wiki/Fresnel_lens

    A Fresnel lens (/ ˈ f r eɪ n ɛ l,-n əl / FRAY-nel, -⁠nəl; / ˈ f r ɛ n ɛ l,-əl / FREN-el, -⁠əl; or / f r eɪ ˈ n ɛ l / fray-NEL [1]) is a type of composite compact lens which reduces the amount of material required compared to a conventional lens by dividing the lens into a set of concentric annular sections.

  3. Oral and maxillofacial surgery - Wikipedia

    en.wikipedia.org/wiki/Oral_and_maxillofacial_surgery

    Oral and maxillofacial surgery requires an extensive 4-6 year surgical residency training covering the U.S. specialty's scope of practice: surgery of the oral cavity, dental implant surgery, dentoalveolar surgery, surgery of the temporomandibular joint, general surgery, reconstructive surgery of the face, head and neck, mouth, and jaws, facial ...

  4. Osteo-odonto-keratoprosthesis - Wikipedia

    en.wikipedia.org/wiki/Osteo-odonto-keratoprosthesis

    Osteo-odonto-keratoprosthesis (OOKP), also known as "tooth in eye" surgery, [1] is a medical procedure to restore vision in the most severe cases of corneal and ocular surface patients. It includes removal of a tooth from the patient or a donor.

  5. Fresnel zone antenna - Wikipedia

    en.wikipedia.org/wiki/Fresnel_zone_antenna

    The formulae and algorithms for predicting the radiation pattern of an offset Fresnel lens antenna are presented in, [8] where some experimental results are also reported. Although a simple Fresnel lens antenna has low efficiency, it serves as a very attractive indoor candidate when a large window or an electrically transparent wall is available.

  6. Gundersen Health System - Wikipedia

    en.wikipedia.org/wiki/Gundersen_Health_System

    Gundersen Health System (Gundersen Health) is a comprehensive non-profit health system based in La Crosse, Wisconsin. [2] The system includes multi-specialty group medical practices, a teaching hospital, regional community clinics, affiliate hospitals and clinics, behavioral health services, vision centers, pharmacies, and air and ground ambulances.

  7. Dental instrument - Wikipedia

    en.wikipedia.org/wiki/Dental_instrument

    A dental laser is a type of laser designed specifically for use in oral surgery or dentistry. The use of a laser can decrease morbidity after surgery, and reduces the need for anesthetics . Because of the cauterization of tissue there will be little bleeding following soft tissue procedures, and some risks of alternative electrosurgery ...