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

Abstract

Purpose: To compare surgical parameters among eyes undergoing laser-assisted cataract surgery (LACS) using different lens fragmentation patterns (LFP). Methods: Prospective, randomized, unmasked clinical trial. One-hundred eyes underwent LACS and were randomly assigned to 1 of 3 LFP treatment groups: (1) laser capsulotomy only; no lens fragmentation (NLF) (n = 34); (2) three-plane chop (TPC) (n = 33); and, (3) pie-cut pattern (PCP) fragmentation (n = 33). Prechop phacoemulsification (PHACO) was performed on all eyes using the same femtosecond (FS) laser and active-fluidics PHACO machine. Main outcome measures: FS laser dock time (s), PHACO time (s), PHACO power (%), cumulative dissipated energy (CDE) (%-s), irrigating fluid volume, and operative time. Results: The 3 treatment groups were comparable in terms of patient age (P = 0.164) and nuclear density (P = 0.669). FS dock time was higher in the PCP group (184.18 ± 25.86) compared to the TPC (145.09 ± 14.15) group (P < 0.001). PHACO time was significantly shorter in the PCP (23.19 ± 17.20 s) compared to TPC (35.27 ± 17.70) and NLF (46.15 ± 23.72) groups (P < 0.001). PHACO power was lower in the PCP (11.81 ± 3.71) compared to the NLF (14.41 ± 1.88) and TPC (14.04 ± 2.46) groups (P < 0.001). CDE was lower in the PCP (2.85 ± 2.32) compared to NLF (6.55 ± 3.32) and TPC (6.55 ± 5.45) groups (P < 0.001). Fluid volumes and operative times were similar. Conclusion: LFP can influence PHACO surgical parameters. Extensive fragmentation patterns such as PCP appear to lower PHACO time, power, and CDE and may potentially reduce the risk of PHACO related complications.

Publication DOI: https://doi.org/10.1007/s10792-019-01087-8
Divisions: College of Health & Life Sciences > School of Optometry > Optometry
College of Health & Life Sciences > School of Optometry > Optometry & Vision Science Research Group (OVSRG)
College of Health & Life Sciences
Additional Information: © Springer Nature B.V. 2019. The final publication is available at Springer via http://dx.doi.org/10.1007/s10792-019-01087-8
Uncontrolled Keywords: LACS,Laser-assisted cataract surgery,Lens fragmentation,Phacoemulsification,Ophthalmology
Publication ISSN: 1573-2630
Last Modified: 23 May 2024 07:13
Date Deposited: 25 Mar 2019 10:02
Full Text Link:
Related URLs: https://link.sp ... 792-019-01087-8 (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2019-11-01
Published Online Date: 2019-03-04
Accepted Date: 2019-02-23
Authors: Uy, Harvey S
Chan, Pik Sha
Gil-Cazorla, Raquel (ORCID Profile 0000-0003-0855-8554)
Shah, Sunil (ORCID Profile 0000-0002-5373-5305)

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