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Landolt C. Lea test. logMAR chart. An eye chart is a chart used to measure visual acuity comprising lines of optotypes in ranges of sizes. Optotypes are the letters or symbols shown on an eye chart. [1] Eye charts are often used by health care professionals, such as optometrists, physicians and nurses, to screen persons for vision impairment.
Snellen chart is used to estimate visual acuity (last three rows are 20/15, 20/13 and 20/10) A Snellen chart is an eye chart that can be used to measure visual acuity. Snellen charts are named after the Dutch ophthalmologist Herman Snellen who developed the chart in 1862 as a measurement tool for the acuity formula developed by his professor ...
The chart was designed by Ian Bailey and Jan E. Lovie-Kitchin at the National Vision Research Institute of Australia. They described their motivation for designing the LogMAR chart as follows: "We have designed a series of near vision charts in which the typeface, size progression, size range, number of words per row and spacings were chosen in an endeavour to achieve a standardization of the ...
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Contact lenses. to correct refractive errors of the eye; a little invasive. Phoropter. used in refraction testing. Tonometers. used to determine the intraoccular pressure (IOP) - useful in glaucoma; video link for various types of tonometers. Speculum: to keep the eyes open during any operation. Universal eye speculum.
Eye for Eye / Tunesmith: 1990: Tor double novel with Lloyd Biggle, Jr. Magic Mirror: 1999: Children's book Robota: 2003: Illustrated book An Open Book: 2004: Collection of poems Ultimate Iron Man: 2005: Comic book series Red Prophet: The Tales Of Alvin Maker: 2006: Comic book series Wyrms: 2006: Comic book series The Space Boy: 2007: Novel ...
Description ( notes ) AC. Anterior chamber. fluid-filled space between the iris and the endothelium. AC 4/4. Grade 4 anterior chamber angle. open angle between cornea and iris. AC 3/4. Grade 3 anterior chamber angle.
Carlo de Candia (1803–1862), Italian cartographer, created the large maritime map of Sardinia in 1: 250,000 scale, travel version. John Bartholomew the elder (26 April 1805 – 8 April 1861), Scottish cartographer and engraver. Henry Peter Bosse (Germany/United States, 1844–1903), also photographer and civil engineer.
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