File:Snellen chart.svg

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Description
English: A typical Snellen chart. Originally developed by Dutch ophthalmologist Herman Snellen in 1862, to estimate visual acuity. When printed out at this size, the E on line one will be 88.7 mm (3.5 inches) tall and when viewed at a distance of 20 ft (= 609.6 centimeters, or 6.09600 meters), you can estimate your eyesight based on the smallest line you can read.
Date 23 July 2008(2008-07-23), 03:34 (UTC)
Source Own work by uploader, Based on the public domain document: [1]
Author Jeff Dahl

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Date/TimeThumbnailDimensionsUserComment
current03:58, 23 June 2008Thumbnail for version as of 03:58, 23 June 20081,303 × 1,624 (112 KB)Jeff Dahl (talk | contribs)
03:34, 23 June 2008Thumbnail for version as of 03:34, 23 June 20081,304 × 1,716 (111 KB)Jeff Dahl (talk | contribs){{Information |Description={{en|1=. When printed out at this size, the E on line one will be 88.7 mm tall and when viewed at a distance of 20 ft, you can estimate your eyesight based on the smallest line you can read.}} |Source=Own work by uploader, Based

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Width 1303
Height 1624
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