Fig. 2

Patient 1 (upper lacrimal duct inflammation, ophthalmodynia and massive secretions, left eye). a Green dotted circle indicates the perforation (1 × 1 mm in diameter) with iris prolapse; yellow dotted circle indicates a corneal ulcer; asterisk indicates a large amount of white purulent secretion emitted from the upper lacrimal punctum. b After edge-trimmed PK surgery, a conjunctival flap was used to cover the corneal graft to avoid corneal reinfection