scholarly journals Comparison of optical quality and distinct macular thickness in femtosecond laser-assisted versus phacoemulsification cataract surgery

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Yong Wang ◽  
Jinling Zhang ◽  
Miaomiao Qin ◽  
Jianguo Miao ◽  
Wei Chen ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Cataract Surgery ◽  
Optical Quality ◽  
Macular Thickness ◽  
Phacoemulsification Cataract Surgery

scholarly journals Comparison of Optical Quality and Distinct Macular Thickness in Femtosecond Laser-Assisted versus Phacoemulsification Cataract Surgery

2019 ◽  
Author(s):  
Yong Wang ◽  
Jinling Zhang ◽  
Miaomiao Qin ◽  
Jianguo Miao ◽  
Wei Chen ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Femtosecond Laser ◽  
Cataract Surgery ◽  
Optical Quality ◽  
Macular Thickness ◽  
Modulation Transfer ◽  
Distance Visual Acuity ◽  
Spatial Frequencies ◽  
Post Operation ◽  
Phacoemulsification Cataract Surgery

Abstract Background: Optical quality and macular thickness changing optical quality is rarely reported after femtosecond laser-assisted cataract surgery. In current research, we evaluated optical quality recovery and distinct macular thicknesschanges after FLACS and phacoemulsification cataract surgery (PCS). Methods: A total of 100 cataract patients (100 eyes) were included (50 eyes for the FLACS group and 50 eyes for the PCS group). Modulation transfer function (MTF), point spread function (PSF) and dysfunctional lens index (DLI) were measured by a ray-tracing aberrometer (iTrace). Uncorrected distance visual acuity (UDVA) and corrected distance visual acuity (CDVA) were also assessed pre-operation and 1 month after surgery. The MTF values at spatial frequencies of 5, 10, 15, 20, 25 and 30 cycles/degree (c/d) were selected. We used optical coherence tomography (OCT) to assess the macular thickness of different regions pre-operatively and1month after the surgery. Results: In PCS group, we found the statistically significant differences between pre-operation and post-operation in DLI ( p <0.0001), PSF(strehl ratio, SR) ( p= 0.027) and MTF ( p =0.028), but not intraocular pressure (IOP) ( p =0.857). The differences between pre-operation and post-operation for DLI ( p =0.031), SR ( p =0.01) and IOP ( p =0.03), but not MTF ( p =0.128) were also found in FLACS group. The differences were statistically significant when the spatial frequencies were at 5, 10 and 25 ( p =0.013, 0.031 and 0.048) between pre-operation and post-operation in PCS group but not FLACS group. In PCS group, we found the differences between pre-operation and post-operation in nasal inter macular ring thickness (NIMRT) ( p =0.03), foveal volume (FV) ( p =0.034) and average retinal thickness (ART) ( p =0.025) but not FLACS group. Conclusion: FLACSis safe that did not cause significant increase of macular thickness in current study. However, it also cannot produce better optical quality. In contrast,PCS can produce macular thickness changes, but better optical quality recovery. The slightly retinal change may not affect optical quality.

scholarly journals Comparison of Optical Quality and Distinct Macular Thickness in Femtosecond Laser-Assisted versus Phacoemulsification Cataract Surgery

2019 ◽  
Author(s):  
Yong Wang(Former Corresponding Author) ◽  
Jinling Zhang ◽  
Miaomiao Qin ◽  
Jianguo Miao ◽  
Wei Chen ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Femtosecond Laser ◽  
Cataract Surgery ◽  
Optical Quality ◽  
Macular Thickness ◽  
Modulation Transfer ◽  
Distance Visual Acuity ◽  
Spatial Frequencies ◽  
Post Operation ◽  
Phacoemulsification Cataract Surgery

Abstract Background: Optical quality and macular thickness changing optical quality is rarely reported after femtosecond laser-assisted cataract surgery. In current research, we evaluated optical quality recovery and distinct macular thicknesschanges after FLACS and phacoemulsification cataract surgery (PCS). Methods: A total of 100 cataract patients (100 eyes) were included (50 eyes for the FLACS group and 50 eyes for the PCS group). Modulation transfer function (MTF), point spread function (PSF) and dysfunctional lens index (DLI) were measured by a ray-tracing aberrometer (iTrace). Uncorrected distance visual acuity (UDVA) and corrected distance visual acuity (CDVA) were also assessed pre-operation and 1 month after surgery. The MTF values at spatial frequencies of 5, 10, 15, 20, 25 and 30 cycles/degree (c/d) were selected. We used optical coherence tomography (OCT) to assess the macular thickness of different regions pre-operatively and1month after the surgery. Results: In PCS group, we found the statistically significant differences between pre-operation and post-operation in DLI ( p <0.0001), PSF(strehl ratio, SR) ( p= 0.027) and MTF ( p =0.028), but not intraocular pressure (IOP) ( p =0.857). The differences between pre-operation and post-operation for DLI ( p =0.031), SR ( p =0.01) and IOP ( p =0.03), but not MTF ( p =0.128) were also found in FLACS group. The differences were statistically significant when the spatial frequencies were at 5, 10 and 25 ( p =0.013, 0.031 and 0.048) between pre-operation and post-operation in PCS group but not FLACS group. In PCS group, we found the differences between pre-operation and post-operation in nasal inter macular ring thickness (NIMRT) ( p =0.03), foveal volume (FV) ( p =0.034) and average retinal thickness (ART) ( p =0.025) but not FLACS group. Conclusion: FLACSis safe that did not cause significant increase of macular thickness in current study. However, it also cannot produce better optical quality. In contrast,PCS can produce macular thickness changes, but better optical quality recovery. The slightly retinal change may not affect optical quality.

scholarly journals Comparison of Optical Quality and Distinct Macular Thickness in Femtosecond Laser-Assisted versus Phacoemulsification Cataract Surgery

2020 ◽  
Author(s):  
Yong Wang ◽  
Jinling Zhang ◽  
Miaomiao Qin ◽  
Jianguo Miao ◽  
Wei Chen ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Femtosecond Laser ◽  
Cataract Surgery ◽  
Optical Quality ◽  
Macular Thickness ◽  
Modulation Transfer ◽  
Distance Visual Acuity ◽  
Spatial Frequencies ◽  
Post Operation ◽  
Phacoemulsification Cataract Surgery

Abstract Background: Optical quality and macular thickness changing optical quality is rarely reported after femtosecond laser-assisted cataract surgery (FLACS). In current research, we evaluated optical quality recovery and distinct macular thickness changes after FLACS and phacoemulsification cataract surgery (PCS). Methods: A total of 100 cataract patients (100 eyes) were included (50 eyes for the FLACS group and 50 eyes for the PCS group). Modulation transfer function (MTF), point spread function (PSF) and dysfunctional lens index (DLI) were measured by a ray-tracing aberrometer (iTrace). Uncorrected distance visual acuity (UDVA) and corrected distance visual acuity (CDVA) were also assessed pre-operation,1 week and 1 month after surgery. The MTF values at spatial frequencies of 5, 10, 15, 20, 25 and 30 cycles/degree (c/d) were selected. We used optical coherence tomography (OCT) to assess the macular thickness of different regions pre-operatively and1month after the surgery. Results: In PCS group, we found the statistically significant differences between pre-operation and post-operation in DLI ( p <0.0001), PSF (strehl ratio, SR) ( p= 0.027) and MTF ( p =0.028), but not intraocular pressure (IOP) ( p =0.857). The differences between pre-operation and post-operation for DLI ( p =0.031), SR ( p =0.01) and IOP ( p =0.03), but not MTF ( p =0.128) were also found in FLACS group. The differences were statistically significant when the spatial frequencies were at 5, 10 and 25 ( p =0.013, 0.031 and 0.048) between pre-operation and post-operation in PCS group but not FLACS group at 1month. In PCS group, we found the differences between pre-operation and post-operation in nasal inter macular ring thickness (NIMRT) ( p =0.03), foveal volume (FV) ( p =0.034) and average retinal thickness (ART) ( p =0.025) but not FLACS group at 1month. Conclusion: FLACS is safe that did not cause significant increase of macular thickness in current study. However, it also cannot produce better optical quality. In contrast, PCS can produce macular thickness changes, but better optical quality recovery. The slightly retinal change may not affect optical quality.

Re: Abell et al.: Cost-effectiveness of femtosecond laser-assisted cataract surgery versus phacoemulsification cataract surgery (Ophthalmology 2014;121:10-6)

Ophthalmology ◽  
2014 ◽  
Vol 121 (10) ◽  
pp. e53-e54 ◽  
Author(s):  
Cedric Schweitzer ◽  
Nathalie Hayes ◽  
Antoine Brezin ◽  
Beatrice Cochener ◽  
Philippe Denis ◽  
...  
Keyword(s):  
Cost Effectiveness ◽  
Femtosecond Laser ◽  
Cataract Surgery ◽  
Phacoemulsification Cataract Surgery

Comparison of real-world treatment outcomes of femtosecond laser-assisted cataract surgery and phacoemulsification cataract surgery: A retrospective, observational study from an outpatient clinic in France

2020 ◽  
pp. 112067212092576
Author(s):  
Philippe Charles Crozafon ◽  
Christine Bouchet ◽  
Monia Zignani ◽  
Ray Griner ◽  
Samuel D Foster ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Femtosecond Laser ◽  
Cataract Surgery ◽  
Multiple Comparisons ◽  
Posterior Capsule Opacification ◽  
Dissipated Energy ◽  
Corneal Oedema ◽  
Corrected Distance Visual Acuity ◽  
Cumulative Dissipated Energy ◽  
Phacoemulsification Cataract Surgery

Purpose: This study compared real-world safety and efficacy outcomes of cataract surgery performed with LenSx femtosecond laser-assisted cataract surgery or manual phacoemulsification cataract surgery procedures. Methods: A retrospective observational study used data from anonymised electronic medical records to compare mean cumulative dissipated energy, the proportion of eyes reaching emmetropia, mean change in best-corrected distance visual acuity and the proportion of eyes with post-surgical complications, including corneal oedema and posterior capsule opacification. Results were adjusted for multiple comparisons for primary and secondary objectives. Results: Data from 811 phacoemulsification cataract surgery and 496 femtosecond laser-assisted cataract surgery procedures were analysed. Mean cumulative dissipated energy was significantly lower for femtosecond laser-assisted cataract surgery (6.5 percent-seconds) than for phacoemulsification cataract surgery (14.3 percent-seconds; p < 0.0001) procedures. More femtosecond laser-assisted cataract surgery (81.2%) procedures achieved emmetropia (⩽ 0.5 dioptre) than did phacoemulsification cataract surgery (73.5%) procedures, although this difference was not statistically significant. Mean change in best-corrected distance visual acuity and the proportion of eyes with corneal oedema, posterior capsule opacification or other complications were not significantly different between cohorts when adjusted for multiple comparisons. Conclusions: In this single-centre, single-surgeon retrospective electronic medical record database study using divide and conquer technique, femtosecond laser-assisted cataract surgery was associated with significantly lower cumulative dissipated energy when compared to manual phacoemulsification cataract surgery. This supports the hypothesis that femtosecond laser-assisted cataract surgery involves less mechanical trauma, which might lead to more consistent refractive and safety outcomes than manual phacoemulsification cataract surgery, though such outcomes were found to be comparable in this study.

A Comparative Cohort Study of Visual Outcomes in Femtosecond Laser-Assisted versus Phacoemulsification Cataract Surgery

Ophthalmology ◽  
2016 ◽  
Vol 123 (1) ◽  
pp. 178-182 ◽  
Author(s):  
Shaun Y.P. Ewe ◽  
Robin G. Abell ◽  
Carmen L. Oakley ◽  
Chris H.L. Lim ◽  
Penelope L. Allen ◽  
...  
Keyword(s):  
Cohort Study ◽  
Femtosecond Laser ◽  
Cataract Surgery ◽  
Visual Outcomes ◽  
Comparative Cohort Study ◽  
Phacoemulsification Cataract Surgery

scholarly journals Changes in Retinal Vasculature and Thickness After Femtosecond Laser-assisted Cataract Surgery and Conventional Cataract Surgery Using Optical Coherence Tomography Angiography

2022 ◽  
Author(s):  
Hong Zhang ◽  
Liangzhang Tan ◽  
Fang Tian ◽  
Xue Gong ◽  
Lu Chen ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Visual Acuity ◽  
Femtosecond Laser ◽  
Cataract Surgery ◽  
Optical Coherence Tomography Angiography ◽  
Macular Thickness ◽  
Retinal Vasculature ◽  
Optical Coherence ◽  
Age Related

Abstract Purpose To assess the changes in retinal vasculature and thickness after femtosecond laser-assisted cataract surgery (FLACS) using optical coherence tomography angiography (OCTA).Methods Fifty-six eyes of 56 patients with age-related cataract were enrolled in this study. Patients were divided into FLACS or conventional phacoemulsification surgery (CPS) due to the choice of operation. Vessel density (VD) and thickness at the macular area and optic nerve head (ONH) were checked by OCTA at baseline and at 1 day, 1 month and 3 months after cataract surgery.Results In the FLACS group: The radial peripapillary capillary (RPC) density displayed a significant reduction during the follow-up (P < 0.05), even when the retinal nerve fiber layer (RNFL) thickness was not significantly changed. There was a significant negative correlation between the changes in RPC density and femtosecond laser-assisted pre-treatment time (FLAPT) at 1 day and 1 month after cataract surgery respectively (both P < 0.05). At 3 months postoperatively, the macular thickness had a significant increase in all regions (all P < 0.05). In the CPS group, the retinal VD and thickness did not show statistically significant changes in all regions during the follow-up (all P > 0.05). However, the best corrected visual acuity (BCVA) was significantly improved in both groups postoperatively (both P < 0.001).Conclusions OCTA provided a promising analysis of retinal vascular alterations, demonstrating the reduction of RPC density and the increase of macular thickness after FLACS. However, these changes had no effect on the improvement of visual acuity after cataract surgery.

Sign in / Sign up

Export Citation Format

Share Document