LAUSR

BACKGROUND Rhegmatogenous retinal detachment (RRD) repair by pars plana vitrectomy (PPV) combined air tamponade has many advantages compared with PPV combined gas tamponade. However, there are controversial outcomes in RRD cases involving the lower quadrants. OBJECTIVE This study aimed to evaluate the efficacy and safety of PPV combined air tamponade in patients with RRD compared with PPV combined gas tamponade and whether it could be a safe alternative to PPV combined gas tamponade. METHODS The PubMed, Embase, and Cochrane Library databases published until September 2022 were comprehensively searched for studies that compared PPV combined with air tamponade and gas tamponade in patients with RRD. The rate of primary treatment success, best-corrected visual acuity (BCVA), and postoperative complications were extracted from the final eligible studies. The mean difference (MD) and risk ratio (RR) were calculated for continuous and dichotomous variables, respectively, with 95% confidence intervals (CIs). RESULTS A total of 8 studies with 668 eyes in the air tamponade group and 944 in the gas tamponade group were included. There was no significant difference in the rate of primary treatment success between the air tamponade group and the gas tamponade group (RR = 1.00, P = 0.79). In addition, the subgroup analysis suggested that whether retinal breaks were located above or below, there was no significant difference in either rate of primary treatment success (RR = 0.99, P = 0.89; RR = 1.02, P = 0.45). There was no significant difference in mean BCVA 3 months after surgery (MD = -0.02, P = 0.50). For postoperative complications, mean postoperative IOP was lower in the air tamponade at one day (MD = -4.24, P < 0.001), and there was no significant difference between the two groups at 7 days (MD = -0.45, P = 0.71), one month (MD = -0.69, P = 0.33), and 3 months (MD = 0.69, P = 0.35) after surgery. The rate of epiretinal membrane (ERM) development was lower in the air tamponade group (RR = 0.48, P = 0.04). CONCLUSIONS For patients with uncomplicated RRD, PPV combined air tamponade is a feasible and safe alternative to PPV combined gas tamponade, regardless of the position of retinal breaks, with a similar primary treatment success rate, postoperative BCVA, and fewer postoperative complications.