Which of the following stains is used in Granular dystrophy of cornea: (A) Congo-red, (B) Masson's trichrome, (C) Colloidal iron, (D) PAS
Answer is B. In granular corneal dystrophy the heredity is autosomal dominant, the opacities formed due to the abnormal accumulation of hyaline protein assume a discrete granular form and subsequently coalecse into various irregular shapes. The intervening cornea between the opacities and peripheral cornea remain clear. Ref:- Parsons diseases of eye; pg num:- 213