Surgical Grade and Repeat Laser Peripheral Iridotomy Procedures with Risk Stratification and Educational Considerations

Background/aims Peripheral laser iridotomy (PLI) is a commonly performed procedure. While effective, repeat procedures (RPs) may be required for a variety of causes. We report the causes and rate of RP PLI and whether surgical grade is a risk factor. Methods Two years of retrospective data from 282 patients who had undergone PLI at a single UK ophthalmology department were retrieved using an electronic medical record system (Medisoft, Leeds, UK). Results A total of 253 patients underwent analysis with 20 requiring RPs. Our data identified a correlation between experience of the operating surgeon and an increase in RP rate, with statistical significance (p=0.036) observed between consultants and registrars. No other statistically significant risk factors were identified from our study. Prescriber preference for iopidine was observed. From our findings and the current literature, prognostic factors that appear to influence RP rate include surgical grade, patient compliance, Asian ethnicity, and anticoagulation. Conclusion RP rate increases in PLI when a junior surgeon is performing the procedure, and thus cases with established prognostic factors for RPs should have senior input. Formal and standardized YAG-laser training should be implemented alongside risk stratification of patients to improve both trainee education and patient care.