Dichromacy

Dichromacy is a condition characterized by the inability to perceive full color. This condition is a type of color blindness and is typically inherited. Dichromacy is divided into three types: protanopia, deuteranopia, and tritanopia.

Types of Dichromacy[edit | edit source]

Protanopia[edit | edit source]

Protanopia is a type of dichromacy where the individual has a complete absence of red retinal photoreceptors. People with protanopia perceive red as black, and certain shades of orange, yellow, and green as yellow.

Deuteranopia[edit | edit source]

Deuteranopia is a type of dichromacy where the individual has a complete absence of green retinal photoreceptors. People with deuteranopia perceive green as beige, and red as brown.

Tritanopia[edit | edit source]

Tritanopia is a type of dichromacy where the individual has a complete absence of blue retinal photoreceptors. People with tritanopia perceive blue as green, and yellow as violet or light grey.

Causes[edit | edit source]

Dichromacy is usually an inherited condition, caused by a mutation in the genes that influence the development and function of the cone cells in the retina. These cells are responsible for detecting color.

Diagnosis[edit | edit source]

Dichromacy can be diagnosed through a comprehensive eye examination. Tests such as the Ishihara Color Test or the Farnsworth-Munsell 100 Hue Test can be used to determine the presence and type of color blindness.

Treatment[edit | edit source]

There is currently no cure for dichromacy. However, special color corrective lenses can be used to help individuals distinguish between different colors.

See Also[edit | edit source]

Dichromacy Resources
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