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Abstract
Abstract
Estimation of Corneal Ablation in Laser In-situ Keratomileusis (LASIK) by Optical Low Coherence Reflectometry (OLCR)
Kojetinsky C., Lackerbauer C.-A., Grueterich M., Ludwig K., Kampik A.
Department of Ophthalmology, Ludwig-Maximilians-Universität, Munich
Purpose: The purpose of this study was to compare the prepoperatively calculated with the postoperatively obtained corneal ablation of patients who underwent LASIK. OLCR was used as a non-contact method with an accuracy of 1,5 micrometers. Furthermore, we investigated on the practicability of OLCR pachymetry in presence of peri- and postoperative corneal changes, in order to find out if this method also can be used for online-pachymetry during laser refractive surgery.
Method: 28 eyes of 16 patients (mean age 35,4 ±8,5 years) were included with a preoperative refraction of -4,44 D in mean (-1,0 to -7,5 D) as spherical equivalent and an astigmatism in mean of -1,17 D (0,0 to -3,25 D). Preoperatively, 6 weeks und 3 months after LASIK corneal pachymetry by OLCR, clinical investigation and refraction was performed.
Results: A very strong correlation was found between the intended an