Search and compare thousands of words and phrases in British Sign Language (BSL). The largest collection online.
How to sign: genetic inability to distinguish differences in hue
Similiar / Same: colour blindness, color vision deficiency, colour vision deficiency
Categories: birth defect, congenital abnormality, congenital anomaly, congenital defect, congenital disorder, vision defect, visual defect, visual disorder, visual impairment
Within this category: dichromacy, monochromacy
