[Detection of dyschromatopsias and professional orientation].

Certain professions necessitate correct recognition of colour in their practice. Early defection of coloured vision abnormalities and professional orientation are therefore very important, especially as it is known that 8 % of the population presents a congenital dyschromatopsy of which one fourth (about 2 %) are serious dyschromatopsies which will prevent the practice of a certain number of professions.