Comparison of efficacy and safety of laser in situ keratomileusis using 2 femtosecond laser platforms in contralateral eyes

Rosman, Mohamad; Hall, Reece C; Chan, Cordelia; Ang, An Shing; Koh, Jane Chwee Wah; Htoon, Hla Myint; Tan, Donald; Mehta, Jodhbir S.

doi:10.1016/j.jcrs.2013.02.038

Cited by 24 publications

(10 citation statements)

References 21 publications

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“…In a previous study,16,17 both IntraLase 60 kHz and Visumax 500 kHz produced comparable efficacy and predictability profiles for flap creation in LASIK. In another study by Yu and Manche,18 when comparing the 150 kHz femtosecond group versus the 60 kHz group, 94.5% and 85.2% of eyes, respectively, achieved a UDVA of 20/20 or better in 6-month follow-up.…”

Section: Discussionmentioning

confidence: 77%

Comparison of efficacy, safety, and predictability of laser in situ keratomileusis using two laser suites

Meidani

Tzavara

2016

OPTH

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PurposeThe main aim of this study was to compare the efficacy, safety, and predictability of femtosecond laser-assisted in situ keratomileusis performed by two different laser suites in the treatment of myopia for up to 6 months.MethodsIn this two-site retrospective nonrandomized study, myopic eyes that underwent laser-assisted in situ keratomileusis using IntraLase FS 60 kHz formed group 1 and those using WaveLight FS200 femtosecond laser system formed group 2. Ablation was performed with Visx Star S4 IR and WaveLight EX500 Excimer lasers, respectively, in groups 1 and 2. Both groups were well matched for age, sex, and mean level of preoperative refractive spherical equivalent (MRSE). Uncorrected distance visual acuity, corrected distance visual acuity, and MRSE were evaluated preoperatively and at 1 week, 1 month, and 6 months after treatment.ResultsFifty-six eyes of 28 patients were included in the study. At 6-month follow-up postop, 78.6% of eyes in group 1 and 92.8% of eyes in group 2 achieved an uncorrected distance visual acuity of 20/20 or better (P=0.252). 35.7% and 50% in group 1 and group 2, respectively, gained one line (P=0.179). No eye lost lines of corrected distance visual acuity. Twenty-five eyes in group 1 (92.7%) and 27 eyes in group 2 (96.3%) had MRSE within ±0.5 D in the 6-month follow-up (P>0.999). The mean efficacy index at 6 months was similar in group 1 and group 2 (mean 1.10±0.12 [standard deviation] vs 1.10±0.1) (P=0.799). The mean safety index was similar in group 1 and group 2 (mean 1.10±0.10 [standard deviation] vs 1.10±0.09) (P=0.407). Conclusion: The outcomes were excellent between the two laser suites. There were no significant differences at 6-month follow-up postop between the two laser systems.

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Section: Discussionmentioning

confidence: 77%

Comparison of efficacy, safety, and predictability of laser in situ keratomileusis using two laser suites

Meidani

Tzavara

2016

OPTH

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“…Ang et al [14] retrospectively compared visual outcomes using the Intralase FS 60-kHz and the Visumax 500-kHz systems and found nearly identical efficacy, predictability, and safety. A prospective study by Rosman et al [15] comparing the Intralase iFS 150-kHz and Visumax 500-kHz platforms confirmed these results with both laser platforms producing similar LASIK outcomes. A study from the Singapore National Eye Center further compared these two laser platforms, specifically examining the efficiency of an eye tracker after LASIK flap creation, and found no difference in centration or eye-tracking ability [16].…”

Section: Femtosecond Lasersmentioning

confidence: 76%

Comparison of femtosecond and excimer laser platforms available for corneal refractive surgery

Chen

Manche

2016

Current Opinion in Ophthalmology

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Advances in femtosecond and excimer laser technology have not only improved the safety and efficacy of refractive procedures, but have also led to the development of promising new treatment modalities, such as SMILE and the use of wavefront-guided and topography-guided ablation. Future studies and continued technological progress will help to better define the optimal use of these treatment platforms.

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“…[21, 22] Only sufficient studies with a larger sample size and adequate follow-up may have the sufficient power to detect differences in predictability. Most of published articles regarding FSL are about intralase femtolaser, however recent publications proved that the efficacy, predictability, and safety profiles of the 500 kHz femtosecond platform for LASIK (Visumax system used in our study) were excellent and comparable to those of the 60 kHz platform [23]. …”

Section: Discussionmentioning

confidence: 87%

Visumax femtolasik versus Moria M2 microkeratome in mild to moderate myopia: efficacy, safety, predictability, aberrometric changes and flap thickness predictability

Torky

Zafiri²,

Khattab

et al. 2017

BMC Ophthalmol

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IntroductionThis is an interventional prospective clinical study which was conducted to evaluate the efficacy, safety, predictability, ocular aberrations, and flap thickness predictability of Visumax femtosecond laser (FSL) compared to Moria M2 microkeratome (MK) in mild to moderate myopia.MethodsThis study included 60 eyes who were divided into two groups. Thirty eyes in group (I) in which the flap was created with Visumax FSL, while in group II (30 eyes) the Moria M2 MK was used. Keratometric, refractive, and aberrometric measurements were compared preoperatively and 3 months postoperatively. The intraoperative subtraction pachymetry (the SP 100 Handy pachymeter (Tomey, Nagoya, Japan) was used for preoperative pachymetry and flap thickness measurement.ResultsNo significant difference was found between the two groups in regards to postoperative manifest sphere, spherical equivalent, astigmatism, safety indices nor ocular aberrations. Twenty six eyes (86.6%) in group I and 23 eyes in group II (76.6%) were within ±0.5D of the intended correction and 23 eyes (76.6%) in group I and 15 eyes in group II (50%) were within ±0.25D of the intended correction. In group I, the mean postoperative actual flap thickness was 100.12 ± 16.1 μm (81 to 122 μm), while in group II, it was 104.6 ± 20.1 μm (62 to 155 μm). The difference was statistically significant (p = 0.001).ConclusionsBoth Visumax and Moria M2 MK are safe and effective in treating myopia with no statistically significant difference in induction of ocular aberrations but with potential advantage for Visumax regarding predictability. More accurate flap thickness is achieved with Visumax femtolasik.Trial registrationThis study was retrospectively registered on 19/6/2017. Trial registration number NCT03193411, clinicalTrials.gov.

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Comparison of efficacy and safety of laser in situ keratomileusis using 2 femtosecond laser platforms in contralateral eyes

Abstract: No author has a financial or proprietary interest in any material or method mentioned.

Cited by 24 publications

References 21 publications

Comparison of efficacy, safety, and predictability of laser in situ keratomileusis using two laser suites

Comparison of efficacy, safety, and predictability of laser in situ keratomileusis using two laser suites

Comparison of femtosecond and excimer laser platforms available for corneal refractive surgery

Visumax femtolasik versus Moria M2 microkeratome in mild to moderate myopia: efficacy, safety, predictability, aberrometric changes and flap thickness predictability

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Comparison of efficacy and safety of laser in situ keratomileusis using 2 femtosecond laser platforms in contralateral eyes

Abstract: No author has a financial or proprietary interest in any material or method mentioned.

Cited by 24 publications

References 21 publications

Comparison of efficacy, safety, and predictability of&nbsp;laser in situ keratomileusis&nbsp;using two laser suites

Comparison of efficacy, safety, and predictability of&nbsp;laser in situ keratomileusis&nbsp;using two laser suites

Comparison of femtosecond and excimer laser platforms available for corneal refractive surgery

Visumax femtolasik versus Moria M2 microkeratome in mild to moderate myopia: efficacy, safety, predictability, aberrometric changes and flap thickness predictability

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Comparison of efficacy, safety, and predictability of laser in situ keratomileusis using two laser suites

Comparison of efficacy, safety, and predictability of laser in situ keratomileusis using two laser suites