The application of ultrasound biomicroscopy in pterygium surgery

Abstract

Objective To observe the guidance role of ultrasound biomicroscope (UBM) examination results for pterygium operation. Methods Eighty-five eyes of 85 cases with primary pterygium were randomly divided into clinical trial group, 46 eyes, using UBM examination results for guiding the pterygium operation; and the control group, 39 eyes, in which traditional pterygium operation was performed. The operation time, postoperative corneal epithelium healing time, patient comfort and recurrence rate between the two groups were compared. Results The conjunctival flap of patients in the two groups healed well. The operation time of the trial group and the control group were (23.06±1.87) minutes and (30.63 ± 2.43) minutes. The difference was statisially significant (t=5.46, P=0.000); The healing time of corneal epithelium were (2.13 ± 0.37) days in trial group and (2.87 ± 0.41) days in control group and the difference was statisially significant (t=4.91, P=0.002); The scores of postoperative discomfort were 0.89±0.39 in trial group and 2.43±0.74 in control group and the difference was statisially significant (t=3.13, P=0.025). The follow-up time was 6 months, and there was no recurrence being found. Conclusion Preoperative UBM examination of pterygium can effectively identify corneal infiltration and adhesion of pterygium, which is conductive to better removal of pterygium head. Key words: Pterygium; Ultrasound biomicroscopy; Stem cell transplantation