Colour vision deficiency and Visual disorder

Colour vision deficiency noun - Genetic inability to distinguish differences in hue.

Visual disorder and colour vision deficiency are semantically related. In some cases you can use "Visual disorder" instead a noun phrase "Colour vision deficiency".

Visual disorder noun - Impairment of the sense of sight.

Colour vision deficiency and visual disorder are semantically related. Sometimes you can replace phrase "Colour vision deficiency" with "Visual disorder", this phrases are similar.