achromat

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Related to achromats: Achromatic doublet

achromat

 [ak´ro-mat″]

ach·ro·mat

(ăk-rō'măt),
A person exhibiting achromatopsia.
[G. a- priv. + chrōma, color]

achromat

/achro·mat/ (ak´ro-mat)

achromat

A person who cannot perceive colour or differentiate between any 2 colour samples, except based on luminosity differences.
 
Sub-types
Pentanopia, intrinsic achromatism.

achromat

an achromatic objective.