blue cone monochromacy

An achromatopsia that is characterized by severely impaired color discrimination, low visual acuity, nystagmus, photophobia due to the absence of functional long wavelength-sensitive and medium wavelength-sensitive cones in the retina and has_material_basis_in alteration in the red (OPN1LW) and green (OPN1MW) visual pigment gene cluster on chromosome Xq28 or in the locus control region for the red and green pigment genes, located adjacent to and 5-prime of the pigment gene cluster.

Trichomonas vaginalis trichomoniasis

A trichomoniasis that involves infection of the urogenital tract, has_material_basis_in Trichomonas vaginalis, which is transmitted through sexual contact. Symptoms include inflammation of the cervix, urethra and vagina which produce an itching or burning sensation, and yellow-green, itchy, frothy foul-smelling vaginal discharge.

optic atrophy 9

An optic atrophy characterized by early childhood onset of decreased visual acuity and pallor of the optic discs, severely reduced visual acuity, paracentral scotoma, red-green dyschromatopsia, and temporal optic atrophy at the fundus that has_material_basis_in homozygous or compound heterozygous mutation in the ACO2 gene on chromosome 22q13.2.

retinal cone dystrophy 3B

A cone dystrophy that is characterized by onset in the first or second decade of life of very marked photophobia, myopia, reduced color vision along the red-green axis with relatively preserved tritan discrimination, and central scotomata with peripheral widespread sensitivity loss predominating in the superior visual field and that has_material_basis_in homozygous or compound heterozygous mutation in the KCNV2 gene on chromosome 9p24.