Cone is the most sensitive cell in the retina. It picks up images from a mix of red, blue and green colors. Abnormality of color perception needing increased use of red color for normal perception is:(AIIMS Nov 2014)
1. If one of the three systems of the color perception is defective but present (Trichromats) the condition is known as protanomaly (red); deuteranomaly (green) and tritanomaly (blue). Q
2. If one of the system is functionally absent (DICHROMATES) the suffix -anopia replaces the suffix -anomaly.
3. Deuteranomaly, Deuteranopia, Protanopia and Protanomaly are X-linked conditions while Tritanomaly and Tritanopia are autosomal recessive conditions.