Blue Cone Monochromatism
Type of disease: Rare conditions
Blue cone monochromatism is an inherited X-linked vision disorder. In this condition both red and green cone sensitivities are absent, however rod function and blue cone sensitivities are present. Signs and symptoms include severely reduced visual acuity (clearnes), eccentric fixation, infantile nystagmus that decreases with age, no obvious retinal abnormalities, and poor or no color discrimination. Source: Genetic and Rare Diseases Information Center (GARD), supported by ORDR-NCATS and NHGRI.