Accommodation through simulated multifocal optics |
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| Authors: | Shrilekha Vedhakrishnan Alberto de Castro Maria Vinas Sara Aissati Susana Marcos |
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| Affiliation: | 1. Instituto de Optica ”Daza de Valdes”, Consejo Superior de Investigaciones Cientificas, IO-CSIC, Serrano, 121, Madrid 28006, Spain;2.Wellman Center for Photomedicine and Harvard Medical school, Massachusetts General Hospital, 50 Blossom St, Boston, MA, USA;3.Center for Visual Science; The Institute of Optics; Flaum Eye Institute, University of Rochester, Rochester, New York, USA |
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| Abstract: | ![]()
We evaluated the interaction of multifocal patterns with eye’s accommodation. Seven patterns were mapped on the spatial light modulator and the deformable mirror of an adaptive optics visual simulator, and projected onto the subjects’ eyes, representing different contact lens designs: NoLens, Bifocal Center Distance (+2.50D), Bifocal Center Near (+2.50D) and Multifocal Center Near-MediumAdd (+1.75D) and Center Near HighAdd (+2.50D), positive and negative spherical aberration (±1µm). The change in spherical aberration and the accommodative response to accommodative demands were obtained from Hartmann-Shack measurements. Positive spherical aberration and Center Distance designs are consistent with a higher accommodative response (p=0.001 & p=0.003): steeper shift of SA towards negative values and lower accommodative lag. |
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