Colour Vision Deficiency (Noun)

Genetic inability to distinguish differences in hue.

Nouns denoting natural processes.

A colour vision deficiency can cause significant difficulties for people trying to complete tasks that rely on precise colour perception, such as picking ripe fruit.
He learned he had a colour vision deficiency during his training as a commercial airline pilot and was required to have additional visual checks before every flight.
Those who inherit colour vision deficiency can become quite adept at coping strategies such as reading subtle texture changes instead of hues to infer more accurately the kind of ripe the ripeness or shade that colour information would otherwise provide.
Researchers conducted investigations into colour vision deficiency as a potential factor in the plane crash, as a pilot who sits in the right seat with known extreme difficulties perceiving lights along runways, ultimately failed procedural and safety inspections.
To their surprise, most men have colour vision deficiency rather than merely being obstinate when categorizing and naming similar shades by hue that others around them can clearly differentiate.