Farnsworth 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).


Color Blind Test

5 months ago | 3 min read

Farnsworth 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).

What is Farnsworth Lantern Test?

If you are a sailor, then you must take these test The sailor and navy men on duty require this test to be completed because it is the vision that matters.

The Farnsworth Lantern Test exceptional color imaginative and prescient exams initially developed to screen sailors for responsibilities requiring color imaginative and prescient, together with spotting sign lighting fixtures at night. Also checkout the color blind test, to check your eye vision.

This test monitors for Red- Green deficiencies; however no longer a good deal rarer blue color deficiency.

Lantern Test indicates a pair of vertically oriented lights together with crimson, green, or yellow-white mixtures. The person is requested to pick out the two hues (some of which can be equal).

There are Nine colouration pairs are administered at some stage in the check, and It begins with a pink/inexperienced color aggregate to allow the consumer to peer at these colourings pair earlier than seeing a white light, which decreases testing errors.

Look at indicated hues for most straightforward seconds, as colouration-deficient humans can, from time to time, correctly perceive the colors with extended exposure and checks.

Yellow-white color or one of the identical pairs of yellow & white shades made a 50% impartial grey filter out to lessen luminance cues to the colour-poor affected person.

Why Farnsworth Lantern Test?

The United States Federal Aviation Administration requires pilots to take a Farnsworth Lantern Test to obtain a pilot’s license.

Features of Lantern Test


The Farnsworth colour blindness check has been used to evaluate color vision for over 50 years.

It evaluates the extent to which your color vision can discern between specific colors and slight hue variations within a given color.

It evaluates the volume to which your color, imaginative and prescient, can parent between unique colors and mild hue variations inside a given shade.


What is the Farnsworth Lantern Test?

The Farnsworth Lantern Test is a color vision test used to evaluate a person's ability to distinguish between different colors, particularly for individuals applying to jobs that require accurate color discrimination, such as pilots. It involves identifying the order of colored lights presented in a lantern device.

How does the Farnsworth Lantern Test work?

During the Farnsworth Lantern Test, the individual being tested is shown a series of colored lights in a specific order. They must correctly identify the sequence of colors by arranging colored disks in the same order. The test measures the individual's ability to perceive and discriminate colors accurately.

Why is the Farnsworth Lantern Test important?

The Farnsworth Lantern Test is crucial in certain professions, especially aviation, where accurate color vision is vital for tasks such as reading instruments, identifying signal lights, and distinguishing between colored objects. It helps ensure that individuals possess the necessary color discrimination skills to perform their jobs safely and effectively.

What are the consequences of failing the Farnsworth Lantern Test?

Failing the Farnsworth Lantern Test may limit career opportunities in professions that require accurate color vision, such as pilots, air traffic controllers, and certain military roles. Those who fail the test may be disqualified from these positions due to the potential risks associated with impaired color discrimination.

Can color vision be improved for the Farnsworth Lantern Test?

While there is no specific treatment to improve color vision for the Farnsworth Lantern Test, individuals can practice color discrimination exercises and engage in activities that enhance visual perception. It is recommended to consult with an eye care professional for guidance and advice on optimizing color vision abilities.


In conclusion, the Farnsworth Lantern Test is a visual examination tool used to assess color vision deficiencies, particularly for individuals involved in occupations that require accurate color discrimination.

This test has been widely utilized to evaluate the ability to discern different hues and identify color-coded signals.

Although it has been a valuable tool in certain fields, advancements in technology have introduced alternative methods that offer more comprehensive evaluations.

Such alternatives include computerized color vision tests that provide more precise and standardized results. As a result, the Farnsworth Lantern Test's significance has diminished over time, making way for more advanced techniques to assess color vision deficiencies effectively.


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