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New polynomial decomposition to enhance the benefits of a nomogram using Q factor modulation

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First Author: N.Rahmania FRANCE

Co Author(s):    I. Salah Mabed   D. Gatinel                 

Abstract Details

Purpose:

To introduce a new polynomial decomposition to depict high order aberrations changes for simulataneous correction of hyperopia and presbyopia using Q factor modulation

Setting:

Study led in Laser Vision Institute Noémie de Rothschild, Paris, France from November 2019 to April 2020.

Methods:

In 28 hyperopes and presbyopic patients, multifocality was induced using Presbylasik with Q factor modulation aiming at myopic defocus in Non Dominant Eye whereas an emmetropic correction was targeted in Dominant Eye. We compared HOAs variations before and after surgery using standard polynomial decomposition (Zernike's) and new polynomial decomposition introduced by Gatinel and Malet.

Results:

Changes in defocus and modified spherical aberration polynomials were better correlated with keratometric and asphericity changes respectively.

Conclusions:

Our results suggest better accuracy of this new polynomial decomposition compared to Zernike's to reflect changes in High order aberrations variations when altering both target Q factor and defocus

Financial Disclosure:

... travel has been funded, fully or partially, by a competing company