Why online results can vary (brightness, blue-light filters, lighting)

Screen brightness, blue-light filters, True Tone/night modes, room lighting, tinted lenses, and zoom can change plate visibility and affect online screening results.

Does this test detect blue-yellow deficiency?

This tool is mainly for red-green screening. Blue-yellow and other colour vision issues need a full clinical assessment with dedicated tests.

Color Blindness Test

Q: What is colour vision deficiency?

Colour vision deficiency means difficulty distinguishing some colours, most commonly red and green shades. It can be inherited or acquired.

Q: What to do if result suggests deficiency

Treat this as a screening signal only. Repeat under better conditions and consult a qualified eye specialist for confirmatory clinical testing.

Screening only. Not a diagnosis.

Calibration Gate

For reliable screening, confirm all conditions below before starting.

Knowledge + FAQ

What is colour vision deficiency?

Colour vision deficiency means difficulty distinguishing certain colours, commonly red-green shades. It can be inherited or acquired.

Why can online results vary?

Screen brightness, night mode, blue-light filters, room lighting, tinted lenses, and zoom can all alter plate visibility.

What should I do if screening suggests deficiency?

Repeat under better conditions and consult a qualified eye specialist for confirmatory clinical testing.

Does this detect blue-yellow deficiency?

This tool mainly screens for red-green issues. Blue-yellow and other patterns need full clinical assessment.

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