In vivo confocal microscopic and histological findings of unknown bullous keratopathy probably associated with pseudoexfoliation syndrome

In this case note, we report the clinical features and in vivo confocal microscopic and pathological findings of two BK cases of unknown cause.Our findings suggest that the BK was caused by the corneal endotheliopathy of PEX, a common disease that could affect up to 30% of people over 60 years old and is more prevalent than we have believed.