2 doctors weighed in:

What is the difference between deuteranopia vs protanopia?

2 doctors weighed in
Dr. Ralph Morgan Lewis
Family Medicine
1 doctor agrees

In brief: Dimmed bright colors

Protanopes lack long-wavelength-sensitive cones & are unable to distinguish between colors in the green–yellow–red part of the spectrum. Also the brightness of red, orange, & yellow is much reduced.
Deuteranopes lack medium-wavelength cones; they have the same hue discrimination problems as the protanope, but without the abnormal dimming. Both have red-green colorblindness.

In brief: Dimmed bright colors

Protanopes lack long-wavelength-sensitive cones & are unable to distinguish between colors in the green–yellow–red part of the spectrum. Also the brightness of red, orange, & yellow is much reduced.
Deuteranopes lack medium-wavelength cones; they have the same hue discrimination problems as the protanope, but without the abnormal dimming. Both have red-green colorblindness.
Dr. Ralph Morgan Lewis
Dr. Ralph Morgan Lewis
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