Granular Dystrophy Type 1 Or Type 2 ?

A 77-year-old male patient was admitted to our clinic with complaints of decreased vision in both eyes, occasional stinging, and photophobia. The patient's history was unremarkable except for type 2 DM and benign prostatic hyperplasia. It was learned that his brother had similar complaints in his eyes, and that he had undergone penetrating keratoplasty and phaco surgery. The visions were 1mps OD, 0.05 OS (does not increase with correction). He had right dominant exophoria. In the corneal stroma of both eyes, there were transparent stromal opacities, clustered in the center, ring and star-shaped, not extending to the limbus, with higher density in the anterior stroma. Corneal lesions were also observed in OCT, corneal topography and in-vivo confocal microscopy. The patient was clinically diagnosed with Granular Dystrophy type 2 (GCD2) and cataract. Phaco, IOL implantation and penetrating keratoplasty (as a triple procedure) was performed on the right eye of the patient. In the postoperative follow-ups, the patient's vision reached the level of 0.2 on the right. The corneal tissue for which pathological studies were performed was stained as + with Masson's trichrome and as - with Crystal violet.