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Slit-lamp postoperative images showing corneal fluorescein staining seven days after the CXL procedure due to progressive keratoconus. (a) a 20-year-old male patient with paracentral sterile corneal infiltrate not staining with fluorescein (b) a 16-year-old male patient with paracentral corneal infiltrate not staining with fluorescein, who additionally experienced corneal epithelialization in the form of erosion of fluorescein-staining cornea.
