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


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Abstract
Abstract

Determination of Corneal and Ocular Aberrations with Corneal Topography and Wavefront Aberrometry

Jahnke M., Wirbelauer C., Häberle H., Pham D. T.
Dept. of Ophthalmology, Vivantes Klinikum Neukölln, Berlin

Purpose: Currently the influence of corneal and ocular aberrations is insufficiently known. The purpose of this study was to compare coma and spherical aberrations with corneal topography and wavefront aberrometry.
Method: In a prospective clinical study 98 eyes of 49 consecutive patients ranging from 17 to 65 years and without pathologies were included. The best-corrected visual acuity ranged from 0,8 to 1,6. 48 eyes were emmetropic (SE ±0,5 D), 42 eyes were myopic (SE <-0,5 to -6,75 D), and 8 eyes were hyperopic (SE >+0,5 to +3,88 D). The corneal aberrations were derived from the height values of placido disc-based corneal topography (Keratron Scout, Optikon). The measurement of the total ocular aberrations was performed in mydriasis (6,5 mm pupil) with a wavefront aberrometer based on the Tscherning principle (ORK, Schwind). Coma and spherical aberrations were determined with the Zernike coefficients (1. to 4. order).<


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