“…More details of generating the Landolt rings are described in Preußner and Wahl. 16 Bottom left: With C0.25 ÿ0.75 Â 37, the best correcting spectacle prescription. The remaining asymmetric halo resulting from the eccentric ablation cannot be corrected by an IOL or by a prescription glass.…”
Section: Fine-tuningmentioning
confidence: 99%
“…16,17 We parametrize the asphericity of the cornea by the numerical eccentricity e in the range ÿ1 ! e !…”
“…More details of generating the Landolt rings are described in Preußner and Wahl. 16 Bottom left: With C0.25 ÿ0.75 Â 37, the best correcting spectacle prescription. The remaining asymmetric halo resulting from the eccentric ablation cannot be corrected by an IOL or by a prescription glass.…”
Section: Fine-tuningmentioning
confidence: 99%
“…16,17 We parametrize the asphericity of the cornea by the numerical eccentricity e in the range ÿ1 ! e !…”
“…Ziel dieser Arbeit ist es, die einzelnen Fehleranteile transparent zu machen und ihre derzeitigen Untergrenzen aufzuzeigen. Als Referenzmethode verwenden wir dabei ein bereits früher publiziertes numerisches Raytracing [26,27,29,30], das die Geometrie des individuellen Auges und die der zu implantierenden IOL berücksichtigt. Seine Rechengenauigkeit ist nur durch die Maschinengenauigkeit limitiert.…”
Some errors of classical IOL formulae can be avoided by raytracing. But if the total error threshold shall be below the error of refraction, the prediction accuracy of postoperative IOL position must be improved.
“…Dies erlaubt eine individuelle Berechnung von Kunstlinsen auch bei "extremen" Augen ohne zusätzliche Informationen. Zu dem Potenzial dieser neuen Methode der IOL-Berechnung sind bereits einige Publikationen erschienen [3][4][5][6][7][8]. Sie zeigen für normale Augen gute Übereinstimmung zu den konventionellen Berechnungen.…”
The measurements of the know reference showed a high accuracy for all systems. The differences in length measurements on the cataract eyes are clinically not relevant. The combination of topography and optical biometry allows new options for calculations of intraocular lenses.
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