Fig. 1

Pre- and postoperative photos and calculation of pterygium size by AS-OCT. Group 1: A preoperative, B 1 month postoperative, C 3 months postoperative, and D pterygium diameter, measured as the distance from the nasal angle recess to the pterygium tip (mm). Group 2: E preoperative, F 1 month postoperative, G 3 months postoperative, and H pterygium diameter, measured as the distance from the nasal angle recess to the pterygium tip (mm). ↓pterygium tip, the position where high reflection was interrupted