About Color Blindness Test
A 10-plate Ishihara-style color vision screening test. Each plate displays a number hidden in a pattern of colored dots. Enter what you see, and the tool scores your answers against the correct values. Results are categorized into normal vision (8+/10), mild deficiency (5–7/10), or possible color vision deficiency (under 5/10).
- 10 Ishihara test plates displayed as WebP images for accurate color reproduction
- Numeric-only input field prevents accidental text entry
- Step-by-step progression with plate counter and keyboard Enter support
- Scoring thresholds: 8+ correct = normal, 5–7 = mild deficiency, under 5 = possible CVD
- Retake option resets all answers for a fresh test
Frequently Asked Questions
- Is this a medical diagnosis?
- No. This is a screening tool, not a clinical diagnosis. It can indicate whether you should consult an eye care professional, but factors like screen calibration, ambient lighting, and display color accuracy all affect results.
- What types of color blindness does this detect?
- Ishihara plates are designed primarily for red-green color vision deficiencies (protanopia and deuteranopia), which account for the vast majority of color blindness cases. They are not effective for blue-yellow deficiency (tritanopia).