Fig. 3From: Effects of excimer laser phototherapeutic keratectomy in limbal-conjunctival autograft transplantation for recurrent pterygium: a retrospective case control studySlit-lamp photos of the patients. a Preoperative recurrent pterygium affecting the pupil area in a 63-year-old male before surgery. b Six months after surgical removal and PTK treatment, the cornea was clear and smooth. c Recurrent pterygium in a 67-year-old male. d Six months after surgery without PTK treatment, the nasal cornea was rough and opaque. PTK: excimer laser phototherapeutic keratectomyBack to article page