Programm                 "Degeneration und Regeneration– Grundlagen, Diagnostik und Therapie"

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LASEK for the Correction of Moderate Myopia and Myopic Astigmatism: Safety, Efficacy, Stability Indices, and Complications

Taneri S.1,2, Azar D. T.2
1Refractive Surgery Center, Muenster; 2Department of Ophthalmology, Massachusetts Eye and Ear Infirmary and the Schepens Eye Research Institute, Harvard Medical School, Boston, Massachusetts, USA

Purpose: To present the visual outcomes and complications in low to moderate levels of myopia and astigmatism treated with LASEK with a focus on postoperative recovery.
Method: Retrospective analysis of a case series of 171 eyes (85 OD, 86 OS) of 105 patients, treated at the Massachusetts Eye and Ear Infirmary with LASEK from 1996 to July 2002 with follow-up of up to 2 years (mean, 31 weeks). Baseline spherical equivalent (SE) ranged from -0.38 to -7.75 diopters (D) with a mean SE of -2.99 ± 1.43 D and a mean cylinder of -0.78 ± 0.73 D. The preoperative uncorrected visual acuity (UCVA) ranged from 0.025 to 0.63 (20/800 to 20/32). Preoperative best spectacle-corrected visual acuity (BSCVA) ranged from 0.63 to 1.25 (20/63 to 20/16); mean, 1.05 ± 0.12; median, 1.0 (20/20). LASEK technique: (1) Create an epithelial flap by 25-45 seconds of 20% alcohol exposure. (2) Corneal surface ablation using three different excimer lasers and nomogram adjustment. (3) Reposition flap and apply bandage contact lens. Main outcome measures: UCVA, efficacy index, manifest refraction, BSVCA, safety index, retreatment rate, and complications.
Results: We observed a tendency towars over-correction usin

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