A FAERS database study on visual impairment adverse events associated with three long-acting insulin analogues.

Purpose: To utilize the U.S. Food and Drug Administration Adverse Event Reporting System (FAERS) to systematically evaluate and compare the risk signals, clinical characteristics, and potential influencing factors of visual impairment adverse events (AEs) associated with three major long-acting insulin analogues (insulin degludec, insulin detemir, and insulin glargine). Methods: This retrospective pharmacovigilance study analyzed FAERS data from Q1 2004 to Q2 2025. Reports explicitly listing any of the three target insulins as the "primary suspect" were extracted. Data extraction and deduplication were conducted in accordance with FDA guidelines. Disproportionality analysis was performed using the Reporting Odds Ratio (ROR), Proportional Reporting Ratio (PRR), Bayesian Confidence Propagation Neural Network (BCPNN), and Multi-item Gamma Poisson Shrinker (MGPS). Furthermore, multivariate regression and Weibull distribution analyses were employed to identify potential clinical risk factors and time-to-onset patterns of these ocular events. Results: A total of 102,953 primary suspect reports were analyzed. Statistically significant visual impairment signals were detected across all three insulins. Insulin glargine exhibited the strongest overall association (ROR = 3.60, 95% Conclusions: Long-acting insulins are associated with varying risks of visual impairment AEs, exhibiting an early-onset temporal pattern. Insulin glargine demonstrated stronger disproportionality signals for glaucoma, while degludec and detemir were more closely associated with retinopathy. These characteristics suggest the necessity of implementing individualized ophthalmic monitoring during the early phase of initiating basal insulin therapy in diabetic patients.