3 Knowledge of the characteristics of different types of inherited red-green colour deficiency
Identification of red-green colour deficiency is an integral part of a complete eye examination approved by the GOC and endorsed by the College of Optometrists.
The spectral anomaloscope, such as the Nagel anomaloscope, is the accepted reference test for congenital red-green colour deficiency. A large number of normal trichromats and colour deficient people must be examined to obtain accurate figures.
When doctors with a red-green colour deficiency were asked to assess clinical photographs to determine whether an abnormality was present, in some instances they failed to spot the signs of an illness (31,32) or to correctly outline the area of abnormality.
In fact, just this year, a group of researchers reported that they were able to cure adult monkeys of red-green colour deficiency with gene therapy.
b) Red-green colour deficiency can be cured with a new set of coloured filters
Toxicity has been associated with a predominantly red-green colour deficiency
. (71,72) The correlation of the FM 100 Hue TES with levels of the drug in blood serum suggested that an elevated score could be used as a sign of toxicity.
This includes either red-green colour deficiency
, which can vary in severity, or the more rare yellow-blue colour deficiency that affects around one person in 20,000.