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Comparison of surgical parameters using different lens fragmentation patterns in eyes undergoing refractive laser-assisted cataract surgery

Poster Details

First Author: H.Uy PHILIPPINES

Co Author(s):                        

Abstract Details


To evaluate and compare surgical parameters and safety among eyes undergoing refractive laser-assisted cataract surgery (RELACS) using different lens fragmentation patterns (LFP).


Ambulatory Curgical Center, Pacific Eye and Laser Institute, Makati, Philippines


Ninety consecutive eyes underwent RELACS using different LFP provided by a single femtosecond laser (Lensar, Orlando FL): Group A, 3-plane chop (n = 30); Group B: 3-plane chop plus pie-cut pattern (n = 30). Group C =(controls, N = 30)underwent conventional phacoemulsification (PE) without LFP (n=30). All surgeries were performed using a prechop technique, by the same surgeon and PE machine (Centurion, Alcon Surgica). Main outcome measures: Pentacam-graded nuclear density, mean PE time, mean PE power, mean cumulative dissipated energy (CDE), mean BSS fluid volume, mean operative time and adverse events. ANOVA and chi-square analyses.


All 90 eyes underwent successful cataract surgery using the femtosecond laser platform. The 3 groups were comparable in terms of nuclear density (P = 0.760), PE power (P=0.116), BSS fluid volume (P=0.364) and operative time (P=0.999). Compared to Group C (controls), Group B (3-plane plus pie-cut pattern) surgeries utilized significantly less PE time (P=0.017) and CDE (P=0.002). No adverse events were observed in all groups during the 1 month follow up duration.


RELACS is a safe and effective for cataract surgery. Compared to conventional PE, RELACS with 3-plane chop plus pie-cut pattern utilized less PE time and CDE. The 3-plane chop plus pie-cut pattern was more efficient compared to 3-plane chop alone. The clinical benefits of these differences should be investigated.

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