Figure 1. Microphotographs of typical clinical features. Microphotographs of typical clinical features of PBS- (A), BAK Sol- (B), BAK Em- (C), CKC Sol- (D), and CKC Em- (E) instilled rabbit eyes 4 h after repeated instillations are shown. BAK Sol induced diffuse hyperemia, chemosis, and purulent
secretions on the conjunctiva. BAK Em and CKC Sol also induced mild conjunctival inflammation. CKC Em-receiving eyes presented
no obvious abnormality on the conjunctiva and showed nearly the same aspect as the PBS-instilled eyes.