Femtosecond laser-assisted LASIK versus PRK for high myopia: comparison of 18-month visual acuity and quality

Hashemi, Hassan; Ghaffari, Reza; Miraftab, Mohammad; Asgari, Soheila

doi:10.1007/s10792-016-0364-7

Cited by 18 publications

(15 citation statements)

References 21 publications

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“…This table reports data before retreats respectively ( Fig. 1f), which is comparable or better than other lower myopia studies [9,16,[23][24][25][26][27][28][29][30][31][32] (Table 3). A better measure of regression effect, than the traditionally reported postoperative SEQ, is the amount of myopic development postoperatively.…”

Section: Complicationssupporting

confidence: 79%

“…In the current study, these correlations were not statistically significant at 2 years. The safety index of 1.05 was comparable to lesser myopia studies ( Table 3), suggesting that LVC in VHM has equivalent safety to that of high myopia [16,25,29,36]. As reported elsewhere [6], the high-rate of microstriae (11.9%) can likely be attributed to the very deep ablations (mean 150 μm), although only two eyes with microstriae were deemed to be visually significant requiring intervention.…”

Section: Complicationssupporting

confidence: 66%

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Refractive, visual, and subjective quality of vision outcomes for very high myopia LASIK from − 10.00 to − 13.50 diopters

Kam

Gauvin

Adiguzel³

et al. 2020

BMC Ophthalmol

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Background: To evaluate laser-assisted in situ keratomileusis (LASIK) outcomes, subjective quality of vision (QoV) and patient satisfaction in eyes with very high myopia (VHM) above − 10.00 diopters (D). Methods: Consecutive myopic and myopic-astigmatism eyes with spherical equivalent (SEQ) ranging between − 10.00 to − 13.50 D underwent LASIK with the WaveLight® Allegretto Wave® Eye-Q 400 Hz excimer laser. Treatment accuracy, efficacy, safety, stability, cylinder vectors, and higher-order aberrations were evaluated, together with subjective QoV and night vision disturbances (NVDs). Results: 114 eyes had a preoperative SEQ of − 11.02 ± 0.81 D, with a median follow-up of 24 months. A total of 72, 84, and 94% of eyes were within ± 0.50, ± 0.75 and ± 1.00 D of intended SEQ (R 2 = 0.71). The efficacy index was 0.93 ± 0.20, with 51 and 81% of eyes achieving 20/20 and 20/25. The astigmatism correction index was 0.95 ± 0.33. The safety index was 1.05 ± 0.12. The average myopic regression was − 0.51 ± 0.38 D. Preoperative QoV scores improved significantly postoperatively (7.5 ± 0.8 vs. 9.1 ± 0.7; P < 0.001), with less NVDs (P < 0.001). Total, spherical and coma root mean square (RMS) postoperative ocular higher-order aberrations were 1.07 ± 0.34, 0.67 ± 0.25, and 0.70 ± 0.40 μm. Conclusions: Very high myopia LASIK between − 10.00 to − 13.50 D is safe and results in good visual outcomes, with high patient satisfaction and a significant improvement in patient-reported QoV after surgery. Appropriately selected patients within this very high myopia group can be included as LASIK candidates.

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Section: Complicationssupporting

confidence: 79%

Section: Complicationssupporting

confidence: 66%

Refractive, visual, and subjective quality of vision outcomes for very high myopia LASIK from − 10.00 to − 13.50 diopters

Kam

Gauvin

Adiguzel³

et al. 2020

BMC Ophthalmol

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“…A meta-analysis by Shortt et al 1 reported that LASIK had superior efficacy and safety compared with PRK; however, the meta-analysis included treatment of eyes with low to high myopia with different treatment techniques. Hashemi et al 20 demonstrated that UCVA improved faster and better after femtosecond-assisted LASIK compared with PRK with mitomycin C with a follow-up duration of 6 months. Both procedures were similar in safety profile but efficacy was better after LASIK with an efficacy index of 0.99 vs 0.93 for PRK.…”

Section: Discussionmentioning

confidence: 99%

Longitudinal comparison of femtosecond-assisted sub-Bowman keratomileusis versus photorefractive keratectomy for high myopia

Chan

Mak

et al. 2016

Br J Ophthalmol

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“…This was unlike our study which catered to a wider range of refractive errors, including high myopes. This could explain the difference in the outcomes as it has been seen in multiple studies that FAL is superior in those with high myopia [ 15 , 17 ].…”

Section: Discussionmentioning

confidence: 99%

A Comparison of Visual Outcomes and Patient Satisfaction Between Photorefractive Keratectomy and Femtosecond Laser-Assisted In Situ Keratomileusis

Hashmani¹,

Hashmani²,

Ramesh

et al. 2017

Cureus

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PurposeTo compare visual outcomes and satisfaction among patients of photorefractive keratectomy (PRK; Wavelight EX 500, Alcon, Ft Worth, TX, USA) and femtosecond laser-assisted in situ keratomileusis (FAL; Wavelight FS 200 laser and Wavelight EX 500, Alcon, Ft Worth, TX, USA).MethodsWe performed a retrospective study of 409 eyes in 207 patients that underwent either PRK (n=90) or FAL (n=117) at the two centers of Hashmanis Hospital, Karachi, Pakistan. The included refractive outcomes were sphere diopters (D), cylinder D, and spherical equivalent D. Additionally, visual acuities were included. All of these were assessed preoperatively and at the one-month postoperative check-up. Patient satisfaction was gauged at the time of chart review by contacting the patient.ResultsWhen looking at the postoperative outcomes, we found all values to be statistically significant (p<0.001) with superior outcomes in the FAL cohort. Additionally, 90% and 15% of eyes achieved a postoperative uncorrected visual acuity (UCVA) of 20/20 in FAL and PRK, respectively. Furthermore, the efficacy indexes of the FAL and PRK arms were 1.00 and 0.82, respectively. The predictability of the procedures were 92.1% and 64.9%, respectively. Lastly, 93.3% of patients were satisfied with FAL and 95.7% with PRK.ConclusionOur study shows superior visual outcomes in patients undergoing FAL. However, we found a higher satisfaction rate in those that underwent PRK, perhaps due to the higher cost of FAL.

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Femtosecond laser-assisted LASIK versus PRK for high myopia: comparison of 18-month visual acuity and quality

Abstract: Although femto-LASIK induces more HOA compared to PRK-MMC, considering outcomes in terms of 20/20 UDVA, residual refractive error, and CS stability, femto-LASIK provides more favorable results than PRK-MMC in high myopia.

Cited by 18 publications

References 21 publications

Refractive, visual, and subjective quality of vision outcomes for very high myopia LASIK from − 10.00 to − 13.50 diopters

Refractive, visual, and subjective quality of vision outcomes for very high myopia LASIK from − 10.00 to − 13.50 diopters

Longitudinal comparison of femtosecond-assisted sub-Bowman keratomileusis versus photorefractive keratectomy for high myopia

A Comparison of Visual Outcomes and Patient Satisfaction Between Photorefractive Keratectomy and Femtosecond Laser-Assisted In Situ Keratomileusis

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