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Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients
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Improving multifocal contact lens fitting by replicating their fitting guides using the SimVis Gekko visual

Eduardo Esteban-Ibañez1, Ainhoa Molina-Martín2, Elena Martínez-Plaza3

  • 1Institute of Optics 'Daza de Valdés', Spanish National Research Council, IO-CSIC, Madrid, Spain; 2EyesVision SL, Madrid, Spain.

Contact Lens & Anterior Eye : the Journal of the British Contact Lens Association
|June 17, 2025
PubMed
Summary

The SimVis Gekko visual simulator, combined with the 3D-VA metric, shows promise for optimizing multifocal contact lens selection. This approach enhances visual performance and wearer satisfaction for presbyopic patients.

Keywords:
Fitting guidesMultifocal contact lensesPresbyopiaSimVis technology

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Area of Science:

  • Ophthalmology
  • Optometry
  • Vision Science

Background:

  • Presbyopia affects near vision, necessitating multifocal contact lenses (MCLs).
  • Accurate MCL selection is crucial for optimal visual performance and patient satisfaction.
  • Current fitting guides may not always provide the best initial lens selection.

Purpose of the Study:

  • To assess the feasibility of using the SimVis Gekko visual simulator with fitting guides for MCL selection.
  • To evaluate a novel metric, 3D-VA (three-dimensional visual acuity), for optimizing initial MCL selection.
  • To determine if this combined approach improves visual outcomes for presbyopic individuals.

Main Methods:

  • Twenty presbyopic subjects participated in the study.
  • MCLs were selected using two methods: standard fitting guides and SimVis Gekko simulations.
  • Visual performance was compared using 3D-VA, perceptual scores, and direct preference.

Main Results:

  • SimVis Gekko matched fitting guide selections in 59% of cases.
  • In cases where SimVis Gekko differed, it resulted in better 3D-VA in 62% of instances.
  • SimVis Gekko selections showed improved perceptual scores (62%) and direct preference (61%), with better near activity scores (p=0.02).

Conclusions:

  • SimVis Gekko effectively complements fitting guide steps for MCL selection.
  • The combination of SimVis Gekko and 3D-VA holds potential for enhancing practitioner-guided MCL selection.
  • This integrated approach may improve MCL adoption and visual performance in the presbyopic population, streamlining the fitting process.