Ishihara-Style Color Vision Screening
This test uses 10 Ishihara-style dot plates to screen for color vision deficiencies including Protanopia, Deuteranopia, and Tritanopia.
For each plate, enter the number you see among the dots.
If you cannot see a number, click "I see nothing".
Ensure screen brightness is at a comfortable level and you are in a well-lit room.
Color blindness (color vision deficiency) is a condition where a person cannot distinguish certain colors or perceive them differently than most people. It affects approximately 8% of men and 0.5% of women of Northern European descent.
This test generates Ishihara-style dot plates using your browser's canvas. Each plate contains a number hidden among colored dots. People with normal color vision can read the number, while those with specific types of color vision deficiency may see a different number or no number at all.
Screen-based tests depend on your display's color accuracy and calibration. Results may vary between devices. This screening cannot replace a professional clinical examination with standardized test materials.