Farnsworth Lantern Test
The Farnsworth Lantern Test, also known as FALANT, is a color vision test originally developed specifically to screen sailors for tasks requiring color recognition, such as identifying signal lights at night.
Test Instructions
- Click the “Start Test” button to begin the test.
- You will see a sequence of colored lights displayed in the lantern area.
- For each light combination, identify the colors you see using the buttons:
- Red – if you see only red light(s)
- Green – if you see only green light(s)
- Both – if you see both red and green lights
- After completing all trials, your results will be displayed.
- This test is for screening purposes only and does not replace a professional examination.
Note: For accurate results, ensure proper screen brightness and avoid glare on your display.
Lantern Test
Test Results
Test Completion: Not completed
Correct Responses: 0 out of 0
Accuracy: 0%
Result Interpretation: Test not completed
Recommendation: Complete the test to receive a recommendation.
About the Farnsworth Lantern Test
The Farnsworth Lantern Test was developed by Dean Farnsworth in the 1940s. It presents pairs of colored lights that the test taker must identify. The test is designed to screen for red-green color deficiencies.
How It Works
The test displays pairs of colored lights in quick succession. The test taker must identify the colors shown. The combinations test the ability to distinguish between red and green, which is crucial for certain professions like aviation and maritime work.
Limitations
This online version is for informational purposes only. For official color vision testing, consult with an eye care professional who can administer standardized tests under controlled conditions.