Image Based Question-66022

Test of colour vision as shown in the photograph below is known as ?

A. Ishihara test

B. Edridge Green lantern test.

C. Farnsworth-Munsell 100 hue test.

D. Nagel’s anomaloscope.

Correct Answer » A Explanation

Ans:A. Ishihara test

Tests for color vision

• Ishihara’s pseudo-isochromatic charts

• Hardy-Rand-Rittler plates

• Edridge-Green lantern test

• Fansworth-Munsell 100 hue test

• Nagel’s anomaloscope

• Holmgren’s wolls test

Ishihara test

• It is a color perception test for red-green color deficiencies

• The test consists of a number of colored plates, called Ishihara plates, each of which contains a circle of dots appearing randomized in color and size.

• Within the pattern are dots which form a number or shape clearly visible to those with normal color vision, and invisible, or difficult to see, to those with a red-green color vision defect.