It is also known as Deuteranopia. There are various kinds of color vision defects. Red green color vision defect is the most common type of color blindness. The color blindness is more common in men than in women. It is the inability to distinguish between shades of color.

 

Achromatopsia is a condition in which the person cannot see any color. It is often associated with lazy eye, nystagmus, severe light sensitivity and poor vision.

Causes

• Color blindness is genetic in some cases.

• It occurs if there is a problem with the cones of the eye.

• Certain diseases like diabetes, glaucoma, macular degeneration, Alzheimer’s disease, Parkinson’s disease, chronic alcoholism, leukemia and sickle cell anemia.

• Medications like high blood pressure medications, medications used for infections, nervous disorders.

• Age: It occurs as part of aging.

• Chemicals: Exposure to some chemicals like carbon disulfide, fertilizers and styrene.

Tests and diagnosis

Eye examination by an ophthalmologist.

Treatment

 There is no treatment for the correction of inherited color deficiency.

 Wearing colored filter over eye glasses or colored contact lens will increase the perception of contrasts.