Corneal dystrophies are usually –: (A) Primarily unilateral, (B) Primarily bilateral, (C) Primarily unilateral without systemic disease, (D) Primarily bilateral with systemic disease
Answer is B. "A corneal dystrophy is classically bilateral, progressive, and isolated to the cornea. The disorder is inherited, characteristically in a dominant fashion, and often appears clinically to involve only one layer of the cornea "...Yanoff