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Auto refractive, auto keratometer, topographic wavefront and manifest determination of astigmatism and axis in normal ametropic eyes

Poster Details

First Author: F.Orucoglu TURKEY

Co Author(s):    S. Aliyeva              

Abstract Details


The purpose of this study was to check for five different methods of assessment of astigmatism and axis with auto refractometer, auto keratometer, topography, wavefront and manifest refraction


Kudret Eye Hospital


The study included 217 eyes of 115 patients who were evaluated for excimer laser procedures. Auto refractometer, auto keratometer, manifest refractive, topographic and wave-front data was evaluated.


Manifest, auto refractive, keratometric, topographic and wavefront cylinder were -0.97 D, -0.99 D, -1.27 D, -1.21 D, -1.07 D respectively. Auto refractometer and manifest cylinder were not statistically different (p=0. 291). As well keratometric and topographic cylinders were statistically similar (p=0.112). Auto refractive, Auto keratometric, topographic and ,wavefront , axis were 108.4, 96.1, 95.0, 91.6 degrees respectively. Manifest axis were 112.2 degree. Manifest and auto refractometer axis were statistically similar (p=0.193). Keratometric, topographic and wavefront axis were statistically similar (p = 0.570 to 0.825).


Manifest refraction showed similarity with auto refractometer measurements in normal ametropic eyes. Wavefront axis showed similarity with keratometry and topography. FINANCIAL DISCLOSURE?: No

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