Calculation of crystalline lens power using a modification of the Bennett method | Zendy

Víctor Manuel Vargas Hernández | Zendy; Florence Cabot | Zendy; Marco Ruggeri | Zendy; Carolina de Freitas | Zendy; Arthur Ho | Zendy; Sonia H. Yoo | Zendy; Jean–Marie Parel | Zendy; Fabrice Manns | Zendy

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Calculation of crystalline lens power using a modification of the Bennett method

Author(s) -

Víctor Manuel Vargas Hernández,

Florence Cabot,

Marco Ruggeri,

Carolina de Freitas,

Arthur Ho,

Sonia H. Yoo,

Jean–Marie Parel,

Fabrice Manns

Publication year - 2015

Publication title -

biomedical optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.362

H-Index - 86

ISSN - 2156-7085

DOI - 10.1364/boe.6.004501

Subject(s) - lens (geology) , optics , refraction , optical power , power (physics) , refractive error , cornea , physics , mathematics , visual acuity , laser , quantum mechanics

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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