Causes and risk factors
Deuteranomaly is a hereditary condition caused due to the malfunctioning of green photoreceptors (M cone). It is a sex-linked disorder (X-chromosome), affecting predominantly the male gender.
Clinical presentation
The patient cannot differentiate hues of green. Green objects appear of a darker colour, such as black. Differentiation of the red, yellow, and orange colors is affected. Even though the shades are wrongly perceived, the intensity of the colors remain unchanged. Thus the brightness is not affected.
Investigations
This condition is diagnosed by an anomaloscope examination. Other tests include the Ishihara color test, the Farnsworth lantern test and the Farnsworth -Munsell 100 hue test.
Treatment
There is no cure for deuteranomaly or any other color vision deficiencies. Using contact lenses can, however, improve the condition.
Complications
Individuals with deuteranomaly usually do not have any difficulties in managing day-to-day life.
When to contact a doctor
Contact a doctor as soon as you experience any defects in recognizing green, red, orange, or yellow shades.
Prevention
Being a hereditary condition, no preventive measures are available.
Facts and figures
Deuteranomaly affects about 5-6% of male population and 0.3 to 0.4% of female population.
Systems involved
Ophthalmology.
Organs involved
Eyes
Recent updates
Nowadays, many advanced contact lenses have been developed in order to improve the color vision in individuals with deuteranomaly.
