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Phoropter

A phoropter or refractor is an ophthalmic testing device. It is commonly used by eye care professionals during an eye examination, and contains different lenses used for refraction of the eye during sight testing, to measure an individual's refractive error and determine their eyeglass prescription. It also is used to measure the patient's phorias and…

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Overview

Operation

Trademark and origin of the term

History

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Map overview Semantic statistics

Phoropter

Nodes41
Edges40
Triples87
Avg. degree1.95
Density0.04878
Components1

How this topic connects Entity context

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Phoropter

Top relations

related to Europe and Asia · 27
Phoropter → American, AO Ultramatic, Asia, British Refracting Unit, China, Ellis Optical Co, Europe, France, Genothalmic Refractor, Germany, Greens Refractor, Greens' Refractor, In, Japan, Magnon RT, Nikon Optester, Phorovist, Rodenstock, Starting, Stearman
related to DeZeng/American Optical/Reichert · 16
Phoropter → Also, Around, Camden, Cross-cylinders, DeZeng Phoro-Optometer, Henry DeZeng, It, Jackson, Maddox, New Jersey, No, Risley, Steven's, The, There, This
related to Trademark and origin of the term · 16
Phoropter → American Optical, AO's, April, Bausch, DeZeng, DeZeng Standard, Greens' Refractor, Lomb, Massachusetts, New Jersey, Phoroptor, Reichert, Reichert Technologies, The, Ultramatic Rx Master Phoroptor, USPTO
related to Shigon/Woolf/Genothalmic/Shuron/BRU · 12
Phoropter → In, It, Nathan Shigon, New York City, Philadelphia, Reimold, Ski-Optometer, Stevens Phorometer, There, This, To, Wm
related to history · 8
Phoropter → European, Greens' Refractor, Henry DeZeng, Nathan Shigon, Phoro-optometer, Ski-optometer, The, These
related to Operation · 4
Phoropter → Phoropters, Sometimes, The, Typically

Important terminology Word statistics

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Important terminology

lenses refractor also dezeng greens' range eye cylinder phoroptor weighed oz ao used optical power ultramatic device genothalmic well introduced

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Maddox rodsinstance ofauxiliary devices0.80text
filtered lensesinstance ofauxiliary devices0.80text
prismsinstance ofauxiliary devices0.80text
and the JCCinstance ofauxiliary devices0.80text
Phoropterrelated to DeZeng/American Optical/ReichertAlso0.60section
Phoropterrelated to DeZeng/American Optical/ReichertHenry DeZeng0.60section
Phoropterrelated to DeZeng/American Optical/ReichertDeZeng Phoro-Optometer0.60section
Phoropterrelated to DeZeng/American Optical/ReichertThis0.60section
Phoropterrelated to DeZeng/American Optical/ReichertCamden0.60section
Phoropterrelated to DeZeng/American Optical/ReichertNew Jersey0.60section
Phoropterrelated to DeZeng/American Optical/ReichertMaddox0.60section
Phoropterrelated to DeZeng/American Optical/ReichertRisley0.60section

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