Vision Test

Color Blindness Test

Take a quick Ishihara-style test to check your color vision. Identify the hidden numbers in each plate.

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How It Works

1. View Plates

Look at each Ishihara-style plate showing colored dots

2. Identify Number

Select the number you see or "Nothing" if you can't see it

3. Get Results

Receive your score and explanation after all plates

Medical Disclaimer

This is a screening tool only, not a medical diagnosis. For accurate results and proper diagnosis, please consult an eye care professional.

Understanding Color Blindness

What is Color Blindness?

Color blindness (or color vision deficiency) is a reduced ability to distinguish between certain colors. It affects approximately 8% of men and 0.5% of women worldwide. Most color blind individuals can see colors, but have difficulty distinguishing between specific shades.

The Ishihara Test

Developed by Dr. Shinobu Ishihara in 1917, this test uses plates containing colored dots that form numbers or patterns. People with normal color vision see certain numbers, while those with color deficiencies see different numbers or nothing at all.

Types of Color Vision Deficiency

Protanopia (Red-Blind)

Difficulty distinguishing between red and green colors. Red appears more green/brown.

Deuteranopia (Green-Blind)

The most common type. Difficulty with green wavelengths. Reds and greens may look similar.

Tritanopia (Blue-Blind)

Rare. Difficulty distinguishing blue and yellow. Blues may appear greenish.

Frequently Asked Questions

Can color blindness be cured?

Currently, there is no cure for inherited color blindness. However, special glasses and contact lenses (like EnChroma) can help some people with red-green color blindness see colors more vibrantly. Gene therapy research is also showing promising results.

Is this test accurate?

This online test provides a general screening but is not a replacement for professional eye examination. Monitor calibration, screen brightness, and ambient lighting can affect results. For accurate diagnosis, please consult an optometrist or ophthalmologist.

Can women be color blind?

Yes, but it's much rarer. Color blindness is typically inherited through the X chromosome. Since women have two X chromosomes, they need to inherit the gene from both parents. Men only need one affected X chromosome, making them much more likely to be color blind.