Abstract

P 130

LASEK retreatment for the correction of residual refractive errors after primary surface ablation

Karsten Hufendiek, Viola Radeck, Philipp Prahs, Horst Helbig, Wolfgang Herrmann
Klinik und Poliklinik für Augenheilkunde, Universitätsklinikum Regensburg, Regensburg

Objective
To evaluate the safety and efficacy of LASEK retreatment after primary surface ablation (LASEK, EpiLASIK) with a 400 Hz Excimer Laser System.
Methods
Patient files of 1320 eyes of 846 consecutive patients who underwent primary surface ablation (EpiLASIK n=  , LASEK n= ) for the correction of myopia and/or astigmatism were reviewed. 57 eyes of 53 patients required enhancement surgery. 8 enhancement surgeries were wavefront-guided treatments, 12 enhancement surgeries were topography-guided treatments and 37 enhancement surgeries were standard treatments.
Photoablation was performed with a Wavelight Allegretto Wave EyeQ 400Hz Excimer Laser. After photoablation a soft bandage contact lens (Pure Vision, Bausch & Lomb) was applied. 3 days after surgery the contact lens was removed.
Results
The mean spherical equivalent (SE) was -4.5 diopters (D) ± 3.12 (SD) (range -8.00 to -1.12 D) before the primary procedure – either EpiLASIK or LASEK – and -1.31 ± 1.01 D (range -2.75 to + 2.0 D) after the first correction. The mean time between the initial photorefractive procedure and LASEK enhancement was 23.2 ± 24.3 months (range 3 to 46 months). The mean follow-up after retreatment was 6.52 ± 3.24 months (range 3 to 12 months). At the final follow-up visit, 48 eyes (84.2%) had an uncorrected visual acuity of 20/30 or better and 44 eyes (77.2%) were within ±1.00 D of the target refraction. No patient lost more than 1 line of best corrected visual acuity or developed corneal haze greater than grade 1.
Conclusions
Our results indicate that LASEK retreatment after primary LASEK/EpiLASIK is a safe and effective procedure.

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