Abstract
To compare the clinical outcomes and surgical safety between femtosecond laser-assisted cataract surgery (FLACS) and conventional phacoemulsification cataract surgery (CPCS) in vitrectomized eyes. A prospective interventional comparative study was conducted at a tertiary eye care center. Sixty consecutive cases requiring cataract surgery following pars plana vitrectomy were allocated into Group 1 ( n = 30), who underwent FLACS with intraocular lens implantation, and Group 2 ( n = 30), who underwent CPCS with intraocular lens implantation, and followed up for 3 months. Primary outcome measures were intraoperative ultrasonic cumulative dissipated energy (CDE) and intraoperative and postoperative complications. The secondary outcome measures were postoperative changes in endothelial cell count (ECC) and central corneal thickness (CCT). Baseline corrected distance visual acuity (CDVA), ECC, and CCT were comparable. Intraoperative CDE was significantly less in the FLACS group (8.11 vs. 15.83 percentage seconds; P = 0.012) with no intraoperative complication in either group. The postoperative CDVA was comparable between the groups with a trend toward earlier visual recovery in the FLACS group. The postoperative day (POD) 1 endothelial cell loss was higher in the CPCS group (7.54% vs. 2.05%), with the mean endothelial cell density being significantly higher in the FLACS group throughout the follow-up period ( P < 0.05). POD-1 corneal edema was higher in the CPCS group compared to FLACS with no significant difference on follow-up. Intraoperative migration of silicone oil to the anterior chamber was observed in 40% versus 0% in the CPCS versus FLACS groups, respectively. FLACS can be safely performed in post-vitrectomy eyes with lesser intraoperative ultrasonic energy used, postoperative endothelial cell loss, and change in CCT compared to CPCS.
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