incomplete achromatopsia

in·com·plete a·chro·ma·top·si·a

[MIM*200930] impaired but not absent color vision with less severely reduced visual acuity than in complete achromatopsia, associated with photophobia and nystagmus; autosomal recessive inheritance. An autosomal dominant [MIM*180020] form and several X-linked [MIM*304020, MIM*300085, and MIM*303700] forms exist.