Farnsworth D-15 Test

🎯 What is the Farnsworth D-15 Test?

The Farnsworth D-15 test is a color vision assessment tool used to detect and classify color vision deficiencies. It consists of 15 colored caps that need to be arranged in order of gradual color change.

📝 Test Instructions

1. Enter your name in the input field for personalized results
2. Study the reference order - observe how colors gradually transition
3. Click "Start Test" to scramble the colors
4. Drag and drop the colored caps (except the reference cap) to arrange them in order
5. Click "Check Order" when you think the arrangement is correct
6. View your results and download them for your records

🔍 Understanding Results

The test result diagram shows three axes representing different types of color vision deficiencies:

• Protan Axis (Red) - Difficulties with red-green discrimination, primarily red
• Deutan Axis (Green) - Difficulties with red-green discrimination, primarily green
• Tritan Axis (Blue) - Difficulties with blue-yellow discrimination

If your color arrangement follows one of these axes, it may indicate a specific type of color vision deficiency.

💡 Tips for Best Results

• Use this test in good lighting conditions (natural daylight is best)
• Ensure your screen brightness and color settings are properly calibrated
• Take your time - there's no rush to complete the test
• The reference cap (marked "REF") cannot be moved and serves as your starting point

⚠️ Important: This is a screening tool only for professional diagnosis of color vision deficiencies.