What FM-100 error score indicates colour vision deficiency?

Normal total error score (TES) varies by age but approximately 100 suggests mild-moderate deficiency; >200 indicates severe colour vision impairment.

How does FM-100 differentiate congenital from acquired colour vision defects?

Congenital defects show consistent red-green (protan/deutan) or blue-yellow (tritan) axis on the polar plot. Acquired defects often show tritan or non-specific axis, asymmetry between eyes, or progressive worsening.

Farnsworth-Munsell Hue Test — Colour Vision Assessment

Estimate Farnsworth-Munsell 100-Hue test total error score interpretation for colour vision deficiency classification and differentiation of congenital versus acquired dyschromatopsia.

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Farnsworth-Munsell Hue Test — Colour Vision Assessment

Frequently Asked Questions

What FM-100 error score indicates colour vision deficiency?

How does FM-100 differentiate congenital from acquired colour vision defects?