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The first edition of
Snellen's book was in German. Over more than two deades, he published at least seven more editions of his book. The eighth edition contains charts in English, Italian, French, German, and
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Since its inception, more copies of the
Snellen Chart have been sold in the United States than any other poster. It remained a ubiquitous standard in medical offices into the 21st century.
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He was named to succeed
Donders as the institute's director in 1884, a position he served until 1903. In 1877, he was appointed as a professor of ophthalmology at
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as well as research on correction of visual acuity using eyeglasses and ophthalmological surgery.
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Probebuchstaben zur
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Optotypi ad visum determinandum secundum formulam = d/D. Ed. 8, metrico systemate
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and others, in 1862 Snellen developed his eye chart to measure visual acuity.
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The most significant innovation was
Snellen's use of what he called
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Although alternative versions had been developed before him, by
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a calligraphic hand of the Latin script of German
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208:. He earned his medical degree in 1858 from
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394:"Eye Chart Still The Standard For Vision"
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267:and were separated by 1 minute of arc.
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134:Netherlands Hospital for Eye Patients
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468:Academic staff of Utrecht University
196:Herman Snellen studied medicine at
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27:Dutch ophthalmologist (1834–1908)
374:"How Visual Acuity Is Measured"
329:. Utrecht: P. W. Van De Weijer
206:Jacobus Schroeder van der Kolk
186:American Philosophical Society
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443:19th-century Dutch inventors
165:[ˈɦɛr.mɑnˈsnɛ.lə(n)]
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463:Utrecht University alumni
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152:to estimate visual acuity
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348:Snellen, Herman (1885).
323:Snellen, Herman (1862).
202:Gerardus Johannes Mulder
438:Dutch ophthalmologists
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372:Watt, Wendy Strouse.
224:. He did research on
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292:search.amphilsoc.org
288:"APS Member History"
161:Dutch pronunciation:
172:who introduced the
399:2012-09-29 at the
379:2020-06-19 at the
222:Utrecht University
198:Utrecht University
182:Franciscus Donders
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458:People from Zeist
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331:. Retrieved
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295:. Retrieved
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234:eye diseases
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131:Institutions
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79:(1908-01-18)
453:1908 deaths
448:1834 births
226:astigmatism
96:Nationality
89:Netherlands
67:Netherlands
432:Categories
297:2024-03-28
274:References
232:and other
192:Early life
55:1834-02-19
423:Biography
261:optotypes
188:in 1894.
176:to study
397:Archived
377:Archived
230:glaucoma
216:Director
148:Typical
85:Utrecht
121:Fields
240:Chart
99:Dutch
63:Zeist
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