File:Snellen chart.svg

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Full resolution‎ (SVG file, nominally 1,303 × 1,624 pixels, file size: 112 KB)
Did You Know This image appeared on Wikipedia's Main Page in the Did you know? column on 14 July 2010.
Wikipedia

[edit] Summary

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

[edit] Licensing

I, the copyright holder of this work, hereby publish it under the following licenses:
w:en:Creative Commons
attribution share alike		 This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work).
  • share alike – If you alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one.
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.

You may select the license of your choice.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current03:58, 23 June 2008Thumbnail for version as of 03:58, 23 June 20081,303 × 1,624 (112 KB)Jeff Dahl
03:34, 23 June 2008Thumbnail for version as of 03:34, 23 June 20081,304 × 1,716 (111 KB)Jeff Dahl{{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
The following pages on the English Wikipedia link to this file (pages on other projects are not listed):

Global file usage

The following other wikis use this file:

Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.
Width 1303
Height 1624
Retrieved from "http://en.wikipedia.org/w/index.php?title=File:Snellen_chart.svg&oldid=411714235"
Personal tools
Namespaces

Variants
Actions
Navigation
Interaction
Toolbox