June 2023
Volume 64, Issue 8
Open Access
ARVO Annual Meeting Abstract  |   June 2023
Correspondence between simulated and measured wavefront maps in multifocal contact lens wearers.
Author Affiliations & Notes
  • Gary Mikaelian
    Kabushiki Kaisha Nidek, Gamagori, Aichi, Japan
  • Patrick Caroline
    Pacific University, Forest Grove, Oregon, United States
  • Mari Fujimoto
    Pacific University, Forest Grove, Oregon, United States
  • Shanaz Ahmed
    Pacific University, Forest Grove, Oregon, United States
  • Footnotes
    Commercial Relationships   Gary Mikaelian Nidek Co Ltd, Code E (Employment); Patrick Caroline None; Mari Fujimoto None; Shanaz Ahmed None
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science June 2023, Vol.64, 3527. doi:
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    • Get Citation

      Gary Mikaelian, Patrick Caroline, Mari Fujimoto, Shanaz Ahmed; Correspondence between simulated and measured wavefront maps in multifocal contact lens wearers.. Invest. Ophthalmol. Vis. Sci. 2023;64(8):3527.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose : There are several commercially available multifocal contact lens designs that have been clinically demonstrated to slow down myopia progression. However, the exact mechanisms by which these contacts affect the eye growth are unclear. Better understanding of the mechanisms by which multifocal contact lenses influence the axial length will be extremely beneficial for designing future myopia control devices and optimizing particular treatment options for specific patients. The first aim of this work is to illustrate how different multifocal contacts shape the optical wavefront in order to evaluate the connections between the optical wavefront and myopia progression. The second aim of this work is to evaluate the agreement between the ray tracing in model eyes and clinical wavefront measurements of subjects wearing multifocal contacts.

Methods : Wavefronts of normal eye subjects were measured with the NIDEK OPD Scan III. Both eyes of each subject were fitted with different multifocal contact lens designs and OPD Scan III wavefront measurement were performed over the contact lens. Ray tracing simulations of human eye model fitted with various designs of multifocal contact lenses were performed in Zemax OpticStudio.

Results : Preliminary results show some correspondence between the simulated and measured wavefronts. In order to achieve better quantitative agreements, simulations need to take into account accommodation, pupil decentration, and orientation of the visual axis.

Conclusions : Multifocal soft contact lenses are one of the preferred modalities for myopia control. Currently practitioners can choose between several designs that are statistically proven to slow down myopia progression. Studies show that eyes with larger amounts of corneal higher order aberrations (HOAs) show less myopia progression and smaller axial elongation, suggesting that corneal HOAs play a role in the refractive and ocular developments in children. Several plausible mechanisms have been proposed by which higher order aberrations may influence axial eye growth, the development of refractive error, and the treatment effect of myopia control interventions. This pilot study provides insights on how different multifocal lens designs influence ocular wavefront and what types of HOAs are induced by commercial multifocal contact lenses.

This abstract was presented at the 2023 ARVO Annual Meeting, held in New Orleans, LA, April 23-27, 2023.

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