Different Types of Color Blindness Tests

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EyeQue Team

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May 18, 2021

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What Tests Are Used to Diagnose Color Blindness?

If you suspect that you don’t perceive colors properly, it may be time for you to take a color blindness test. Testing for color vision deficiency, or color blindness, can actually be quite simple. There are several different tests that can help you determine whether or not you have color blindness.

Below are the four most common types of color vision tests:

Ishihara Color Test

Ishihara color TestDeveloped by a Japanese ophthalmologist, the Ishihara color test assesses for red-green color blindness. The test consists of 38 plates – each plate has many dots that form a circle on it. The dots are different sizes and hues and form a number, either one or two digits. If you have normal color vision, you should be able to see the number with ease. If you have a color vision deficiency, you will have trouble distinguishing the numbers or won’t be able to make them out at all.

Anomaloscope Test

Anomaloscope Color TestThis test checks whether you can match different colors. Looking through an eyepiece, you will see circles that are made up of yellow, red, and green lights. You have to adjust the colors of the circles to make them match. If you have difficulty seeing red and green, you will not be able to adjust the colors correctly.

Farnsworth-Munsell 100 Hue Test

Farnsworth Color TestThe Farnsworth-Munsell uses different colored blocks or pegs to identify color vision deficiency. You have to arrange the blocks in rainbow order, (i.e. going from lightest to darkest or red to purple). This test is often used for people that are employed in sectors that require highly accurate color vision, such as a graphic designer.

Cambridge Color Test

Cambridge Color TestThis test is very similar to the Ishihara test, but instead of cards, color vision is assessed using a computer screen. The letter “C” will be a different color from the background of the screen and will appear randomly. You have to press the appropriate button when you can see the letter.

If you think you might have color vision deficiency, get the EyeQue Vision Monitoring Kit which includes the Insight device. You’ll know in just a few minutes if you have color vision deficiency or not.

Save Time, Save Money, See Better

The EyeQue Vision Monitoring Kit combines two at-home vision test solutions. Test your refractive error with VisionCheck, and screen for distance, color, and contrast vision with the Insight. A pupillary distance tool, Bluetooth remote, and a soft-shell protective case are included.

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