granular corneal dystrophy type I (MONDO_0007377) can be described as follows. Type I granular corneal dystrophy (GCDI) is a rare form of stromal corneal dystrophy characterized by multiple small deposits in the superficial central corneal stroma, and progressive visual impairment, which may sometimes be severe. Also known as: GCD1, GCDI, classic GCD, classic granular corneal dystrophy, corneal dystrophy Groenouw type I, granular corneal dystrophy type 1.