dikromaattiset

Dikromaattiset refers to a specific color vision deficiency where an individual has only two types of cone cells functioning in their eyes, instead of the usual three. This condition results in a reduced ability to distinguish between certain colors, most commonly reds and greens, or blues and yellows. The most prevalent form of dikromatism is deuteranopia, which is a red-green color blindness, followed by protanopia, another form of red-green color blindness. Tritanopia, a blue-yellow color blindness, is rarer.

The underlying cause of dikromatism is genetic, typically inherited through X-linked recessive genes for red-green deficiencies. This means it is more common in males. The absence or malfunction of one of the cone cell types prevents the brain from receiving the full spectrum of color information. Individuals with dikromatism may perceive the world in a limited range of hues and can have difficulty with tasks that rely heavily on color discrimination, such as identifying traffic lights or choosing ripe fruit. Diagnosis is usually made through various color vision tests, such as the Ishihara plates. While dikromatism cannot be cured, assistive technologies and strategies can help individuals manage its effects.