Farnsworth–Munsell 100 hue test

A test for color vision and hue discrimination

The Farnsworth–Munsell 100 hue test is a color vision test that measures an individual's ability to discern small differences in hue. It is widely used in both clinical and industrial settings to assess color discrimination capabilities.

History

The test was developed by Dean Farnsworth in the 1940s and is based on the Munsell color system, which was created by Albert H. Munsell. The Munsell system organizes colors based on three dimensions: hue, value (lightness), and chroma (color purity).

Munsell color system

Test Description

The Farnsworth–Munsell 100 hue test consists of four trays, each containing a series of small, colored caps. Each cap is a different hue, and the task is to arrange the caps in order of hue progression. The test is designed to evaluate the ability to perceive subtle differences between similar colors.

Farnsworth–Munsell Hue Color Vision Test setup

Procedure

Participants are asked to arrange the caps in each tray in a sequence that represents a gradual transition from one hue to another. The test is typically conducted under standardized lighting conditions to ensure accuracy.

100 hue arrangement

Scoring

The test is scored by calculating the total error score, which is the sum of the differences between the participant's arrangement and the correct order. A lower score indicates better color discrimination ability.

Applications

The Farnsworth–Munsell 100 hue test is used in various fields, including:

• Ophthalmology: To diagnose and monitor color vision deficiencies.
• Occupational health: To assess the color vision of individuals in professions where color discrimination is critical, such as graphic design and quality control in manufacturing.
• Research: To study color perception and its variations among different populations.

Limitations

While the test is a valuable tool for assessing color vision, it has limitations. It requires a certain level of cognitive ability and manual dexterity, which can affect the results. Additionally, the test may not detect all types of color vision deficiencies.

Hue test example

Lighting Conditions

Proper lighting is crucial for accurate results. The test should be conducted under standardized lighting conditions, such as those provided by a daylight simulator.

Illuminant curves

Related Pages

• Color blindness
• Ishihara test
• Munsell color system
• Color vision

Standard gamma curve