Fig. 2From: Evaluation of optical quality in pterygium patients with a new modified sutureless and glue-free methodDifferential analyses between pterygium grading and three optical quality values (A, B, C), and correlation analyses between pterygium diameter and three optical quality values before surgery (D, E, F). p1 Grade 1 vs Grade 2, p2 Grade 2 vs Grade 3, p3 Grade 1 vs Grade 3Back to article page