Macular corneal dystrophy (MCD) is a rare, severe form of stromal corneal dystrophy characterized by bilateral ill-defined cloudy regions within a hazy stroma, and eventually severe visual impairment. The disease is macular corneal dystrophy (MONDO_0009020). Also known as: Fehr corneal dystrophy, MCD, corneal dystrophy Groenouw type II, macular dystrophy, corneal, 1.