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Visual simulators replicate vision with multifocal lenses.

Maria Vinas1, Clara Benedi-Garcia2, Sara Aissati2

  • 1Institute of Optics, Spanish National Research Council, IO-CSIC, Serrano, 121, Madrid, 28006, Spain. maria.vinas@csic.es.

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Adaptive optics visual simulators accurately mimic vision through multifocal intraocular lenses (IOLs). This study validates simulation technology against real IOL performance, confirming its reliability for predicting visual outcomes.

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Area of Science:

  • Ophthalmology
  • Optical Engineering
  • Visual Science

Background:

  • Adaptive optics (AO) visual simulators are used to model vision with multifocal intraocular lenses (IOLs).
  • The accuracy of these simulations compared to real IOL performance in vivo has not been previously established.
  • Simulations utilize deformable mirrors, spatial light modulators (SLMs), or optotunable lenses.

Purpose of the Study:

  • To compare the through-focus (TF) optical and visual quality of real multifocal IOLs (M-IOLs) with simulations using SLM or optotunable lens technology.
  • To validate AO-based visual simulation as a reliable method for assessing M-IOL performance.
  • To assess correspondence between benchtop optical measurements and in-patient visual acuity.

Main Methods:

  • Real bifocal refractive and trifocal diffractive M-IOLs were compared to simulations using SLM and optotunable lens (SimVis) technology.
  • Measurements were conducted on 7 cyclopleged subjects using a custom polychromatic AO Visual Simulator.
  • Benchtop testing employed double-pass imaging on an artificial eye for optical quality assessment.

Main Results:

  • A good correspondence was observed between the through-focus performance of real and simulated M-IOLs.
  • This agreement was consistent for both optical quality measured on a benchtop and visual acuity measured in patients.
  • The study demonstrated that AO visual simulations largely capture the performance of real M-IOLs.

Conclusions:

  • AO visual simulators provide a reliable method for predicting the optical and visual performance of multifocal IOLs.
  • Simulated M-IOL performance in an AO environment closely matches real-world outcomes.
  • This technology can effectively assess individual visual performance with different M-IOL designs.