Boolean
The Oxford Dictionary of Phrase and Fable
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2006
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© The Oxford Dictionary of Phrase and Fable 2006, originally published by Oxford University Press 2006. (Hide copyright information)
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Boolean denoting a system of algebraic notation used to represent logical propositions by means of the binary digits 0 (false) and 1 (true), especially in computing and electronics. The name comes from George
Boole (1815–64), English mathematician, from whose ideas the study of mathematical or symbolic logic mainly developed.
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Ophthalmoscope quickly changed view of the eye
Magazine article from: Ophthalmology Times; 12/15/1999; ; 700+ words
; ...Coccius and Javal. The ophthalmoscope went through hundreds...devised a binocular indirect ophthalmoscope, which, although interesting...popularity. All of these early ophthalmoscopes were reflecting. A mirror...1885, the first electric ophthalmoscope was demonstrated by William...
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Direct ophthalmoscope a valued tool for examining optic disc
Magazine article from: Ophthalmology Times; 1/15/2006; ; 700+ words
; ...Examining the optic disc using the direct ophthalmoscope is a preferred method among some glaucoma...he relies primarily on the direct ophthalmoscope. "It is a beautiful instrument...information." He likes the direct ophthalmoscope because it allows illumination of...
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Ophthalmoscope widens retinal view: Materials and design integration give doctors efficient diagnoses and patients greater comfort. (Excellence in Design Grand Prize).(Brief Article)
Magazine article from: Design News; 3/11/2002; ; 700+ words
; ...traditional instruments, called ophthalmoscopes (first used in 1915...with the PanOptic [TM] Ophthalmoscope which gives physicians...another example of the ophthalmoscope's utility, Dr. Mark...the fundus, the PanOptic Ophthalmoscope allows a new view of the...
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Charles May improved the ophthalmoscope
Magazine article from: Ophthalmology Times; 11/15/2002; ; 700+ words
; ...Dr. May described his ophthalmoscope with a double Rekoss disk...glass mirror used for the ophthalmoscope with a glass prism, which...standard for almost all ophthalmoscopes throughout the 1960s...1982. Keeler C. The ophthalmoscope. 2 vols. Oostende, Belgium...
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Ophthalmoscope delivers reliable images
Magazine article from: Ophthalmology Times; 4/15/2001; ; 700+ words
; ...Panoramic200 non-mydriatic scanning laser ophthalmoscope safely, conveniently, and reliably...system is a new type of scanning laser ophthalmoscope that produces single, high-resolution...said. Previously, scanning laser ophthalmoscope technology enabled ophthalmologists...
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Family of Laser Ophthalmoscopes to Debut at AAO.
PR Newswire; 10/26/1998; 700+ words
; ...line of Scanning Laser Ophthalmoscopes (SLO's) developed by...introduce a hand-held Ophthalmoscope, and a PocketScope device...convention. The hand-held ophthalmoscope is expected to sell for...replacement for direct ophthalmoscopes, could sell for less than...
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Australian Inventors Develop Ophthalmoscope with Integral Printer
News Wire article from: US Fed News Service, Including US State News; 7/16/2007; 447 words
; ...Balmain, Australia, have developed an ophthalmoscope with an integral printer. According...Patent & Trademark Office: "An ophthalmoscope includes a lens and an eyepiece by...by the Patent Office, said: "The ophthalmoscope includes a handle within which there...
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Tracking retinal motion with a scanning laser ophthalmoscope
Magazine article from: Journal of Rehabilitation Research and Development; 5/1/2005; ; 700+ words
; ...pursuit is critical. The scanning laser ophthalmoscope (SLO) has been used to acquire retinal...retinal locus, SLO = scanning laser ophthalmoscope. INTRODUCTION Vision is a complex...movement of PRLs, the scanning laser ophthalmoscope (SLO) is the only instrument that...
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German Inventors Develop Ophthalmoscope
News Wire article from: US Fed News Service, Including US State News; 4/9/2008; 560 words
; ...Ronald Spaltmann of Grassau, Germany, have developed an ophthalmoscope. An abstract of the invention, released by the U.S...Trademark Office, said: "The invention relates to an ophthalmoscope for examining the fundus of an eye of a patient, which...
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Texas Inventor Develops Scanning Laser Ophthalmoscope
News Wire article from: US Fed News Service, Including US State News; 10/11/2006; 439 words
; ...method and an apparatus for using adaptive optics in a scanning laser ophthalmoscope. According to the U.S. Patent & Trademark Office: "A scanning laser ophthalmoscope incorporates adaptive optics to compensate for wavefront aberrations...
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ophthalmoscope
Book article from: The Columbia Encyclopedia, Sixth Edition
ophthalmoscope , instrument used for examining the inner structure of the eye . The...handle. Sighting is through a single or binocular eyepiece. The ophthalmoscope is equipped with a rotating disc of lenses to permit observation of...
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Retinal Cryopexy
Encyclopedia entry from: Gale Encyclopedia of Surgery: A Guide for Patients and Caregivers
...looking into the eye using the indirect ophthalmoscope while pushing gently on the outside...thorough examination of the retina. An ophthalmoscope is used to examine the retina. This...visualization. Afterwards, an indirect ophthalmoscope is used. This instrument is worn...
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Hermann Ludwig Ferdinand von Helmholtz
Encyclopedia entry from: Encyclopedia of World Biography
...principle of the conservation of energy and invented the ophthalmoscope. He also investigated the physics of tone and color perception...wrote of a marvelous new device to investigate the eye, the ophthalmoscope, which made its inventor world famous almost overnight...
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ophthalmo-
Book article from: The Oxford Pocket Dictionary of Current English
ophthalmo- • comb. form Med. relating to the eyes: ophthalmoscope.
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Helmholtz, Hermann Ludwig Ferdinand von
Book article from: A Dictionary of Biology
...German physiologist and physicist. In 1850 he measured the speed of a nerve impulse and in 1851 invented the ophthalmoscope. In physics, he discovered the conservation of energy (1847) and introduced the concept of free energy .
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