Congenital anomaly and Colour vision deficiency

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

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

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

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