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Medical Term:


Pronunciation: pro'ta-no'pe-a

Definition: A form of dichromatism characterized by absence of the red-sensitive pigment in cones, decreased luminosity for long wavelengths of light, and confusion in recognition of red and green.

[G. protos, first, + a- priv. + ops (op-) eye]

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.