Media in category “Ishihara plates”. The following 27 files are in this category, out of 27 total. rgjpg × ; 18 KB. rg17 ISHIHARA COLOR BLINDNESS TEST PLATE 1. Page 2. ISHIHARA COLOR BLINDNESS TEST PLATE 2. Page 3. ISHIHARA COLOR BLINDNESS TEST. Dr. SHINOBU ISHIHARA. Professor Emeritus of the University tritanopia if absolute, but, even if such cases do exist, they are extremely rare. The plates in this.

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The vanishing design is used on either side of the plate, one side for deutan defects an the other for protans.

This page ishiharaa last edited on 15 Januaryat Dr Shinobu Ishihara introduced in —almost years ago—the most well known color blindness test. I believe that this scanned plates have some shifts in color. Only colorblind people are able to spot the sign. The following other wikis use this file: Skip to main content.

File:Ishihara 23.PNG

But nevertheless this plates are still in use in the absence of any better and still affordable color vision test. Only people with good color vision can see the sign.


This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to ishihzra or digitize it. Color blind people will see a different sign than people with no color vision handicap. Views View Edit History.

File:Ishihara PNG – Wikimedia Commons

The timestamp is only as accurate as the clock in the camera, and it may be completely wrong. Ishihara plates 42 number. This file is ineligible for copyright and therefore in the public domain because it consists entirely of information that is common property and contains no original authorship. Comments [ edit ] Ishihara Plate No.

Ishihara Test – Wikidata

If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. Retrieved from ” https: If you can see all of them you are definitely color abnormal, as some of them should only be seen by colorblind people and others only by non-colorblind ones: Public domain Public domain false false.

Each of his tests consists of a set of colored dotted plates, each of them showing either a number or a path. If you would like to take an online test, please visit my collection of Online Color Blindness Tests. There are other color blindness tests available, but none of them is as famous as the Ishihara plates. Hereafter the isshihara Ishihara Plates will be shown. By using this site, you agree to the Terms of Use and Privacy Policy.


Since then this is the most widely used color vision deficiency test and still used by most optometrists and ophthalmologists all around the world.

It is also well known, that even people with normal color vision sometimes struggle with this test. There exist four different types of plates: From Wikimedia Commons, the free media repository.

PD ineligible Media missing infobox template Files with no machine-readable author Files with no machine-readable source.

This is used to differentiate between red- and green-blind persons.