Color Blind Test

Lantern Test

Lantern Test

The test consists of showing 9 pairs of vertically oriented lights.

Combinations of either red, green or yellow. Identify the colors up and down (some of which are identical).

The colors are shown for only two seconds. If you can not identify the colors, just click to the next button.

Example1:Up - red, down - green

Example2:Up - yellow, down -red

Computer-based color blindness tests may lead to different results because computers only have three basic colors.
Special colors cannot be displayed. In fact, the test only detects moderate and severe red-green colorblindness.
Not suitable for clinical diagnosis!
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What is Lantern Test

The Farnsworth Lantern Test (abbreviated FALANT) is a color vision test that was originally created to screen sailors for duties requiring color vision, such as recognizing signal lights at night. It detects red-green color deficiencies but not the far less common blue color deficiency.  

How to perform the Farnsworth Lantern Test

The subject of the test is asked to identify the two colors (some of which are identical). During the test, there are nine different color combinations. The test starts with a red/green combination so that the patient can see these two colors before seeing a white light. This makes the test less likely to be wrong.

The examination involves displaying nine pairs of vertically arranged lights. Red, green, and yellow color combinations Up and down, identify the colors (some of which are identical). The colors are only displayed for two seconds. If you are unable to identify the colors, move on to the next button.



The Farnsworth lights are larger and brighter than the majority of aviation signals, and they have a greater pass rate than other countries' lantern tests. In addition, applicants can pass by making no mistakes on a single run of 18 lights, which is an insufficient sample size. 

A brief history of the Farnsworth Lantern Test

Lantern tests are used by rail, maritime, and aviation authorities to assess people with aberrant color vision's ability to recognize signal lights. Dean Farnsworth made the Farnsworth lantern in 1946 to see if people who wanted to join the US Navy but had trouble seeing colors could see signal lights at sea.

It was first produced in 1951 and quickly became popular in the Army Force and Civil Aviation in both the United States and Australia. It is still in use today, though it has been replaced by the Optec 900 lantern (Stereo Optical Company), which is a replica of the Farnsworth lantern but with better engineering. 


The number of failed answers is the key element to judging your color perception and sensitivity. The result is displayed in the below outcome table: