What is nagels anomaloscopethe patient is asked to match a, Ask an Expert

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What is Nagel's Anomaloscope

The patient is asked to match a yellow with a mixture of red and green wave lengths. A defect can be detected based on the amount of red and green required.

Protoanomals (red deficient) usually require too much red and deuteroanomals (green deficient) need too much green.

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Category:- Biology
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