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4 Year Stability after Corneal Wavefront Customized Ablation in Lasik Treatments

4 Year Stability after Corneal Wavefront Customized Ablation in Lasik Treatments. I.ASLANIDES, S.PADRONI, ARBA MOSQUERA, G.TOLIOU EMMETROPIA S.A. SCHWIND eye-tech solutions. Financial Disclosure. Aslanides, S. Padroni and G. Toliou have no financial interest in Schwind Eye-Tech Solutions

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4 Year Stability after Corneal Wavefront Customized Ablation in Lasik Treatments

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  1. 4 Year Stability after Corneal Wavefront Customized Ablation in Lasik Treatments I.ASLANIDES, S.PADRONI, ARBA MOSQUERA, G.TOLIOU EMMETROPIA S.A. SCHWIND eye-tech solutions

  2. Financial Disclosure Aslanides, S. Padroni and G. Toliou have no financial interest in Schwind Eye-Tech Solutions S Arba–Mosquera is an employee of Schwind

  3. Purpose • To evaluate the long term stability of the clinical outcomes of aspheric corneal wavefront (CW) ablation profiles in LASIK treatments. Settings • Retrospective interventional case series in private practice

  4. Material and Methods • Eighteen eyes treated initially with Allegretto 400Q (Wavelight) and with a residual postoperative error, were included in the study • Mean age of the patients was 40,77 years • Average UCDVA was 0.62 and BCDVA 0.96 ( Decimal scale) • Sph Eq. 1.60 ( -2.75 to +3.50) • Average astigmatism was 0.840.61

  5. Material and Methods • All eyes were retreated with Corneal Wavefront ablation profiles and followed-up for 4 years. • Standard examination protocol included UCDVA and BCDVA manifest and cycloplegic refraction, pachymetry, pupil size evaluation and corneal wavefront analysis preoperatively and postoperatively . • All procedures were performed by the same surgeon (I.A) . • The excimer laser platform (Esiris by Schwind) was used to perform the ablations according to a customized aspheric treatment profile • Clinical outcomes were evaluated at 6-months, 12 months and 4-years follow-ups in terms of refractive outcome, visual acuity, safety and efficacy.

  6. Results • Postoperative astigmatism was statistically lower (p < 0,005) at all follow up time

  7. Results • SEq achieved corrections were statistically correlated (p < 0,0001) to the attempted values

  8. Results • UDVA was statistically better (p < 0,0001) than pre- retreatment UDVA

  9. Results • Distribution of the postoperative BCDVA was statistically better (p < 0,01) than pre-retreatment BCDVA

  10. Conclusions • No adverse events were recorded during the conduction of this study • The refractive outcome was positive both in terms of UCDVA and overall lack of residual refractive error • The long duration of this study shows that refractive stability is achieved and maintained during 4 years. • In re-treatment cases a wavefront based approach is indicated for optimal refractive outcomes

  11. References Kanellopoulos AJ, Pe LH. Wavefront-guided enhancements using the wavelight excimer laser in symptomatic eyes previously treated with LASIK. J Refract Surg. 2006 Apr;22(4):345-9 Jin GJ, Merkley KH. Conventional and wavefront-guided myopic LASIK retreatment. Am J Ophthalmol. 2006 Apr;141(4):660-8. Alio JL, Montes-Mico R. Wavefront-guided versus standard LASIK enhancement for residual refractive errors. Ophthalmology. 2006 Feb;113(2):191-7

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