Types of Tests for Color Blindness
Color blindness is more often an inherited trait that is diagnosed during childhood. Getting diagnosed as early as possible is important to limit the negative impact vision deficiencies can have in school, sports, and adulthood careers. There are many types of tests for color blindness diagnosis. These tests can be performed by an optometrist or certain general practitioners.
Ishihara Plate Test
The Ishihara Plate Test is one of the most common types of tests for color blindness. With this test, circles are created by two or more colored dots on a page. Within each circle is a number created by different colored dots. You will be asked what number is on the page. Someone experiencing a color vision deficiency will have trouble seeing some of the numbers.
Farnsworth Lantern Test
The Farnsworth Lantern Test is used to determine color blindness that will prohibit the ability to do certain jobs. For example, an aviator or train conductor needs to be able to differentiate the color of lights and signals. In this test, you will be asked to identify the color of pairs of lights.
Farnsworth-Munsell 100 Hue Test
This test is used to determine your ability to see slight changes in color. You will be asked to line up batches of similar colors in order based on their hue.
Cambridge Color Test
The Cambridge Color Test is very similar to the Ishihara Plate Test. For this test, you will be asked to identify the letter “C” from different colored backgrounds on a computer screen.
The Anomaloscope Test will require you to look through an eyepiece while turning a knob to match two light sources in brightness and color.
With a plethora of tests, color blindness does not need to go undiagnosed. Taking a color-blind test online is even a possibility for quick and trusted results.