Colour vision test
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Transcript of Colour vision test
Screening test for RED-GREEN colourdeficiency.
It has 38 plates.
25 plates - numbers
13 plates – pathway.
Viewed at two-third meter (arms length distance)
Viewing time – 4 sec/each plate
It consist of 38 plates
Demonstration plate - 1
Transformation plates - 2 - 9
Vanishing plates - 10 -17
Hidden plates - 18 -21
Classification plates - 22- 25
Tracing plates - 26- 38
Named by Dr shinobo Ishihara at Tokyo university.
-Pseudoisochromatic color plates which are circles in multiple patterns.
The Farnsworth-Munsell 100-hue Color Vision
Tests (FM-100)
The Farnsworth dichotomous test(D-15)
The city university test
It consist of four wooden boxes
93 coloured caps (8 pilot + 85 removable caps)
Box 1:24 caps
Box 2:23 caps
Box 3:23 caps
Box 4:23 caps
The backs of the caps are numbered sequentially
Arrange the caps in random order
Open one case lengthwise before the subject
The object of the test is to arrange the caps in order according to the color
The cases can be given in any order
Allow subject necessary time for him to arrange the colors
After the subject has arranged the caps record the numbers in a scoring sheet in the order arranged by the subject
Observer is asked to mix red
and green colour in such a
proportion that mixture should
match the given yellow coloured disc