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

Autor: Uy HS; Peregrine Eye and Laser Institute, 50 Jupiter Street, 1209, Makati City, Philippines. harveyuy@yahoo.com.; Department of Ophthalmology and Visual Sciences, University of the Philippines, Manila, Philippines. harveyuy@yahoo.com., Chan PS; Peregrine Eye and Laser Institute, 50 Jupiter Street, 1209, Makati City, Philippines., Gil-Cazorla R; Ophthalmic Research Group, Aston University, Birmingham, United Kingdom., Shah S; Birmingham and Midland Eye Centre, Birmingham, UK.
Jazyk: angličtina
Zdroj: International ophthalmology [Int Ophthalmol] 2019 Nov; Vol. 39 (11), pp. 2459-2465. Date of Electronic Publication: 2019 Mar 04.
DOI: 10.1007/s10792-019-01087-8
Abstrakt: 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.
Databáze: MEDLINE
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