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Lantern Test Colour Blindness- Martin Lantern Test

In India, CP III colour vision is judged by Martin Lantern Test. Since these lamps are out of production since 1940, the Armed Forces Medical Services conducted a study in which they tried to bring the lamp test on a computer display(You can read the whole article at Armed Forces Medical Journal of India ). Since the displays are made up of primary colours itself & different displays have different colour profiles.Thus, for realistic & uniform colour production, the computer LCDs were needed to be calibrated as given in step 1.
Disclaimer: This test is not an official or real diagnosis of colour perception. I have just tried to show, how an LCD Martin Lantern may look like, based on the study conducted in 2009 by ophthalmologists of the Indian Army & published by Armed Forces Medical Journal of India

Ishihara CVD test

Ishihara 38 Plates CVD Test

First test plate of the Ishihara CVD test.

The original Ishihara colour blindness test was introduced in early last century and since then, it is by far the most well-known colour vision deficiency test all around the world. Dr Shinobu Ishihara from Japan produced three different test sets which are widely used and which all based on the same pseudoisochromatic plates.

This test is actually designed to be used in a booklet and is usually executed by an eye doctor.But I have made an online version of the test, available right here on  Ishihara38.

The online test is based on the 38 plates edition and will give you a little feedback at the end of the test.

As this test is only made to check for red-green colour blindness, any other form of CVD cannot be detected. And at the end—if you like—you can even share your test result with your friends.This way they can see how you performed and try the test themselves if they like to.

Start the online colour blindness test right here:

=> Ishihara 38 Plates Color Vision Deficiency Test <=

Be aware: This test consists of scanned plates. The colours are not exactly the same as in the original version. You also have to consider, that every computer screen has different colour settings and therefore the test results might alter between different trials.

If you would like to see all the 38 plates in an overview, you can find them at Ishihara Test for Colour Deficiency – 38 Plates Edition.

Grading Level of Colour Perception

Colour perception (CP) can be graded as follows:

CP-1: Correct answers to the series of colours with the smallest aperture of Martin Lantern test at 6 meters.

CP-2: Must pass the Ishihara book with no errors.

CP-3: Should be able to recognize white, red and green colour signal correctly at a distance of 1.5 meters using largest aperture OR able to read requisite plates of Ishihara.

CP-4: When mistakes are made with white, red or green colours in the tests described under CP-3

 Accepted level of colour perception is

CP-III for Army and CP-1 for Indian Airforce and Navy.

Treatment of Colour Blindness

All Tests Combined

Colour Practice

Color Name & Hue

 If you are colour blind, practice colour name and increase your perception. Just hover the mouse on the colour palette and see the name of hue and colour name. Repeat for 21 days.  Color Name & Hue might help you. Try it out.

Click Here for Practice

Farnsworth-Munsell Dichotomous D-15 Test conducted by us

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