Calculation of Crystalline Lens Power Using a Modification of the Bennett Method

Overview

Journal Biomed Opt Express

Specialty Radiology

Date 2015 Nov 25

PMID 26601013

Citations 8

Authors

Victor M Hernandez

Florence Cabot

Marco Ruggeri

Carolina de Freitas

Arthur Ho

Sonia Yoo

Jean-Marie Parel

Fabrice Manns

Affiliations

Soon will be listed here.

Abstract

We present a method for measuring lens power from extended depth OCT biometry, corneal topography, and refraction using an improvement on the Bennett method. A reduced eye model was used to derive a formula for lens power in terms of ocular distances, corneal power, and objective spherical equivalent refraction. An error analysis shows that the formula predicts relaxed lens power with a theoretical accuracy of ± 0.5 D for refractive error ranging from -10 D to + 10 D. The formula was used to calculate lens power in 16 eyes of 8 human subjects. Mean lens power was 24.3 D ± 1.7 D.

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