Blue cone monochromatism

Gene Test: Achromatopsia 3 (CNGB3 gene)
Gene Test: Blue Cone Monochromatism (OPN1LW and OPN1MW genes)
MedlinePlus Encyclopedia: Colorblind
MedlinePlus Encyclopedia: Color blindness tests
MedlinePlus Encyclopedia: Vision problems ...

Children with the less common X linked type (blue cone monochromatism) have blue cones in the retina. They have better visual acuity than children with the autosomal recessive type and have some colour vision.

Blue cone monochromatism ... abnormal vision of blue color
Blue Diaper Syndrome ... reduced visual acuity
Blue-ringed octopus poisoning ... blurred vision, loss of sight, loss of sight
Bobble-head doll syndrome ... impaired vision ...

See also: Symptom, Nystagmus, Autosomal dominant, Autosomal recessive, Blindness