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Published in: Lasers in Medical Science 2/2022

01-03-2022 | Ultrasound | Original Article

Comparison of cumulative dispersed energy between conventional phacoemulsification and femtosecond laser-assisted cataract surgery with two different lens fragmentation patterns

Authors: Hung-Yuan Lin, Shu-Ting Kao, Ya-Jung Chuang, Shuan Chen, Pi-Jung Lin

Published in: Lasers in Medical Science | Issue 2/2022

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Abstract

The purpose of the study is to compare the total ultrasound power used between eyes undergoing different lens fragmentation patterns of femtosecond laser-assisted cataract surgery (FLACS) and conventional phacoemulsification surgery (CPS). A total of 506 patient eyes underwent preoperative grading of lens opacity using the Lens Opacity Classification System III (LOCSIII). The eyes were divided into two subgroups: subgroup 1 had a LOCSIII grade of 1–3, and subgroup 2 had a LOCSIII grade of 4–6. The eyes underwent FLACS (LenSx) for clear corneal wound, capsulotomy, and lens fragmentation. Either a grid pattern or radial pattern was used for lens fragmentation. The eyes received one of the following three treatments: (1) CPS without femtosecond laser assistant, (2) FLACS with a grid pattern (FGP) lens fragment, or (3) FLACS with a quadrant pattern (FQP) lens fragment. The mean cumulative dispersed energy (CDE) for each subgroup and treatment was evaluated. The mean CDE was lower in the two FLACS groups (1.21±1.91 in FGP and 1.22±1.92 in FQP) than that in the CPG group (2.67±2.84). In subgroup 1, CDE was higher in the CPG group (1.54±1.18) as compared with the FLACS groups (0.16±0.31 in FGP and 0.74±1.17 in FQP; P<0.001). In subgroup 2, CDE was higher in the CPG (6.47±3.46) as compared with the FLACS groups (2.74±2.21 in FGP and 5.34±2.17 in FQP; P<0.001). CDE was lower in the two FLACS groups than that in the CPS group, and CDE was the lowest with FGP in both subgroups 1 and 2.
Literature
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go back to reference Reepolmaha S, Limtrakarn W, Uthaisang-Tanechpongtamb W, Dechaumphai P (2010) Fluid temperature at the corneal endothelium during phacoemulsification: comparison of an ophthalmic viscosurgical device and balanced salt solution using the finite element method. Ophthalmic Res 43:173–178. https://doi.org/10.1159/000272020CrossRefPubMed Reepolmaha S, Limtrakarn W, Uthaisang-Tanechpongtamb W, Dechaumphai P (2010) Fluid temperature at the corneal endothelium during phacoemulsification: comparison of an ophthalmic viscosurgical device and balanced salt solution using the finite element method. Ophthalmic Res 43:173–178. https://​doi.​org/​10.​1159/​000272020CrossRefPubMed
18.
Metadata
Title
Comparison of cumulative dispersed energy between conventional phacoemulsification and femtosecond laser-assisted cataract surgery with two different lens fragmentation patterns
Authors
Hung-Yuan Lin
Shu-Ting Kao
Ya-Jung Chuang
Shuan Chen
Pi-Jung Lin
Publication date
01-03-2022
Publisher
Springer London
Published in
Lasers in Medical Science / Issue 2/2022
Print ISSN: 0268-8921
Electronic ISSN: 1435-604X
DOI
https://doi.org/10.1007/s10103-021-03321-1

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