Congenital abnormality and Colour vision deficiency

Congenital abnormality noun - A defect that is present at birth.

Colour vision deficiency and congenital abnormality are semantically related. In some cases you can replace phrase "Colour vision deficiency" with "Congenital abnormality", this phrases are similar.

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

Congenital abnormality and colour vision deficiency are semantically related. You can use "Congenital abnormality" instead a noun phrase "Colour vision deficiency".