Figures 1-2. This is the pathology of the cornea of a patient who underwent penetrating keratoplasty. The stain used is congo red.
1. What is the diagnosis?
2. What are the pathological findings shown?
3. What is the composition of the stromal deposits?
4. If the specimen were examined with a polarizing filter, what would be seen?
5. What kinds of systemic manifestations can be seen in this condition?