A prospective, interventional study comparing the outcomes of macular hole surgery in eyes randomized to C 3 F 8 , C 2 F 6, or SF 6 gas tamponade

Analysis of outcomes of macular hole (MH) surgery using 12% C F , 16% C F , or 18% SF as randomized gas tamponading agent. This is a prospective, randomized, interventional study of 159 eyes with idiopathic MH undergoing 23/25G pars-plana vitrectomy with internal limiting membrane peeling and gas tamponade. Eyes were stratified into two groups: Group I (MH 800 µ) according to MH apical diameter. Eyes in group I were randomized to receive either 18% SF , 16% C F or 12% C F . Eyes in group II were randomized to either 16% C F or 12% C F . Clinical details, MH parameters on optical coherence tomography, surgical details and complications were analyzed. Outcome measures were type of hole closure (I/II), best corrected visual acuity, intraocular pressure, and cataract progression. In Group I (n = 139), type 1 closure was achieved in 107 (77%) eyes. Type 1 closure rates in group I per gas tamponade were as follows: SF (70%), C F (80%), C F (78%) (p = 0.503, chi-square test for independence). There was no statistical difference in MH closure rates between SF and C F (p = 0.134), SF and C F (p = 0.186), and C F and C F (p = 0.373). In Group II (n = 20), type 1 closure was achieved in 12 (60%) eyes. Type 1 closure rates in group II per gas tamponade were as follows: C F (75%), C F (50%) (p = 0.132, Two proportion Z test). Mean follow-up after surgery was 2.66 ± 2.74 months. Given the similar outcomes of using 18% SF , 16% C F or 12% C F in idiopathic macular hole surgery, the advantage of using a shorter acting tamponade translates into earlier recovery and rehabilitation.