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An otoscope or auriscope is a medical device used by healthcare professionals to examine the ear canal and eardrum. [ 1 ] [ 2 ] [ 3 ] This may be done as part of routine physical examinations , or for evaluating specific ear complaints, such as earaches, sense of fullness in the ear, or hearing loss .
Welch Allyn was founded in 1915 in Auburn, New York by Dr. Francis Welch and inventor William Noah Allyn. The two formed a partnership and developed the first hand-held, direct-illuminating ophthalmoscope and convinced Allyn, a medical instruments salesman, to form a partnership. [3]
HEINE Optotechnik is a manufacturer of medical diagnostic instruments and is based in Gilching, near Munich, Germany.The company was founded in 1946 by the German physicist Helmut A. Heine and has been a family run company ever since.
Vortex Optics is a DBA of Sheltered Wings, Inc., which was incorporated in Wisconsin in 1989. Sheltered Wings, Inc. DBA Vortex Optics began in 2002. In 2022 after extensive research, testing and reviews Vortex became an official supplier and contractor to the American Military as the U.S. Army selected Vortex‘s XM-157 fire control system for its Next Generation Squad Weapon program.
The new range of Barr & Stroud binoculars are currently made in China (Nov. 2011) and distributed by Optical Vision Ltd. Bausch & Lomb (US) – has not made binoculars since 1976, when they licensed their name to Bushnell, Inc., who made binoculars under the Bausch & Lomb name until the license expired, and was not renewed, in 2005.
Celestron, LLC is a company that manufactures telescopes and distributes telescopes, binoculars, spotting scopes, microscopes, and accessories manufactured by its parent company, the Synta Technology Corporation of Taiwan.
Galilean type Soviet-made miniature 2.5 × 17.5 monocular Diagram of a monocular using a Schmidt-Pechan prism: 1 – Objective lens 2 – Schmidt-Pechan prism 3 – Eyepiece. A monocular is a compact refracting telescope used to magnify images of distant objects, typically using an optical prism to ensure an erect image, instead of using relay lenses like most telescopic sights.
Ophthalmoscopy, also called funduscopy, is a test that allows a health professional to see inside the fundus of the eye and other structures using an ophthalmoscope (or funduscope).