Comparison of Effective Phacoemulsification Time between Femtosecond Laser-Assisted Cataract Surgery and Conventional Cataract Surgery

Abstract

Purpose: To compare the effect of femtosecond laser-assisted cataract surgery with conventional cataract surgery on effective phacoemulsification time (EPT). Methods: This study included 66 patients 100 eyes who underwent femtosecond laser-assisted cataract surgery and 68 patients 100 eyes who underwent conventional cataract surgery. Both groups underwent phacoemulsification using pulsed ultrasound energy and EPT was evaluated. The groups were further analyzed according to preoperative Lens opacities classification system (LOCS) III grading. Patients who had femtosecond laser-assisted cataract surgery underwent lens fragmentation with quadrant, hybrid, or grid pattern and the EPT was respectively evaluated. Results: The mean EPT was 5.85 ± 4.31 seconds in the femtosecond laser-assisted cataract surgery group and 10.34 ± 6.61 seconds in the conventional group. Overall, EPT was statistically significantly lower in the femtosecond laser-assisted cataract surgery group compared to the conventional group. When the groups were analyzed according to LOCS III grading, this result was consistent for all cataract grades and the reduction in EPT was increased with the higher LOCS III grade. When the groups were analyzed according to lens fragmentation patterns, the mean EPT was lower with 350 μm grid pattern than the quadrant or hybrid pattern. Conclusions: The femtosecond laser-assisted system in cataract surgery can be an efficient cataract surgery using lower EPT compared to the conventional procedure. Additionally, significant differences were observed in the mean EPT of cataract surgery using the femtosecond laser-assisted system among the 3 lens fragmentation pattern groups. J Korean Ophthalmol Soc 2016;57(2):236-242