Comparison of vision through surface modulated and spatial light modulated multifocal optics

Viñas, María; Dorronsoro, Carlos; Radhakrishnan, Aiswaryah; Benedi-Garcia, Clara; LaVilla, Edward Anthony; Schwiegerling, Jim; Marcos, Susana

doi:10.1364/boe.8.002055

Cited by 27 publications

(26 citation statements)

References 32 publications

(52 reference statements)

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“…2 Adaptive optics (AO) visual simulators are particularly attractive to test vision in subjects with new optical designs before delivering or even manufacturing a lens. [15][16][17][18][19] AO-simulations of new corrections enable investigation of interactions between a subject's optics and a given correction, characterization of differences across corrections, and eventually selection of the correction that optimizes perceived visual quality and performance in subjects. 20 In previous studies, 15,16 we have simulated diverse novel refractive multifocal designs (concentric and asymmetric), as well as commercial refractive and diffractive Intraoc-ular lenses (IOLs) using a spatial light modulator (SLM) integrated in an AO system, and demonstrated equivalency between the patient's vision through the simulated lenses and physical lathe-manufactured phase-plates or physical IOLs in a cuvette.…”

Section: Introductionmentioning

confidence: 99%

Optical and Visual Quality With Physical and Visually Simulated Presbyopic Multifocal Contact Lenses

Viñas

Aissati

Gonzalez-Ramos

et al. 2020

Trans. Vis. Sci. Tech.

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As multifocal contact lenses (MCLs) expand as a solution for presbyopia correction, a better understanding of their optical and visual performance becomes essential. Also, providing subjects with the experience of multifocal vision before contact lens fitting becomes critical, both to systematically test different multifocal designs and to optimize selection in the clinic. In this study, we evaluated the ability of a simultaneous vision visual simulator (SimVis) to represent MCLs. Methods: Through focus (TF) optical and visual quality with a center-near aspheric MCL (low, medium and high near adds) were measured using a multichannel polychromatic Adaptive Optics visual simulator equipped with double-pass, SimVis (temporal multiplexing), and psychophysical channels to allow measurements on-bench and in vivo. On bench TF optical quality of SimVis-simulated MCLs was obtained from double-pass (DP) images and images of an E-stimulus using artificial eyes. Ten presbyopic subjects were fitted with the MCL. Visual acuity (VA) and DP retinal images were measured TF in a 4.00 D range with the MCL on eye, and through SimVis simulations of the same MCLs on the same subjects. Results: TF optical (on bench and in vivo) and visual (in vivo) quality measurements captured the expected broadening of the curves with increasing add. Root mean square difference between real and SimVis-simulated lens was 0.031/0.025 (low add), 0.025/0.015 (medium add), 0.019/0.011 (high add), for TF DP and TF LogMAR VA, respectively. A shape similarity metric shows high statistical values (lag κ = 0), rho = 0.811/0.895 (low add), 0.792/0.944 (medium add), and 0.861/0.915 (high add) for TF DP/LogMAR VA, respectively. Conclusions: MCLs theoretically and effectively expand the depth of focus. A novel simulator, SimVis, captured the through-focus optical and visual performance of the MCL in most of the subjects. Visual simulators allow subjects to experience vision with multifocal lenses prior to testing them on-eye. Translational Relevance: Simultaneous visual simulators allow subjects to experience multifocal vision non-invasively. We demonstrated equivalency between real multifocal contact lenses and SimVis-simulated lenses. The results suggest that SimVis is a suitable technique to aid selection of presbyopic corrections in the contactology practice.

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Section: Introductionmentioning

confidence: 99%

Optical and Visual Quality With Physical and Visually Simulated Presbyopic Multifocal Contact Lenses

Viñas

Aissati

Gonzalez-Ramos

et al. 2020

Trans. Vis. Sci. Tech.

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“…The SLM allows representing phase maps with abrupt phase differences (i.e. zonal multifocal lenses) as well as diffractive optics . In a study we simulated multifocal (bifocal, trifocal and tetrafocal, radially and angularly distributed, respectively) patterns on the SLM.…”

Section: Viobio Lab Adaptive Optics Technologiesmentioning

confidence: 99%

VioBio lab adaptive optics: technology and applications by women vision scientists

Marcos

Benedi-Garcia

Aissati

et al. 2020

Ophthalmic Physiologic Optic

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Purpose Adaptive Optics allows measurement and manipulation of the optical aberrations of the eye. We review two Adaptive Optics set‐ups implemented at the Visual Optics and Biophotonics Laboratory, and present examples of their use in better understanding of the role of optical aberrations on visual perception, in normal and treated eyes. Recent findings Two systems (AOI and AOII) are described that measure ocular aberrations with a Hartmann‐Shack wavefront sensor, which operates in closed‐loop with an electromagnetic deformable mirror, and visual stimuli are projected in a visual display for psychophysical measurements. AOI operates in infrared radiation (IR) light. AOII is provided with a supercontiniuum laser source (IR and visible wavelengths), additional elements for simulation (spatial light modulator, temporal multiplexing with optotunable lenses, phase plates, cuvette for intraocular lenses‐IOLs), and a double‐pass retinal camera. We review several studies undertaken with these AO systems, including the evaluation of the visual benefits of AO correction, vision with simulated multifocal IOLs (MIOLs), optical aberrations in pseudophakic eyes, chromatic aberrations and their visual impact, and neural adaptation to ocular aberrations. Summary Monochromatic and chromatic aberrations have been measured in normal and treated eyes. AO systems have allowed understanding the visual benefit of correcting aberrations in normal eyes and the adaptation of the visual system to the eye's native aberrations. Ocular corrections such as intraocular and contact lenses modify the wave aberrations. AO systems allow simulating vision with these corrections before they are implanted/fitted in the eye, or even before they are manufactured, revealing great potential for industry and the clinical practice. This review paper is part of a special issue of Ophthalmic & Physiological Optics on women in visual optics, and is co‐authored by all women scientists of the research team.

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“…After calibration of the focimeter in its initial configuration (Fig. 2), the slit (S) and the measuring arm (Prism (P), Macro Objective (MO) and High Speed Camera (HSC)) were moved to an adaptive optics system [36], where they were coupled to the existing projecting elements creating an intermediate slit image (S'). We measured temporal waves with steps of 2 D, also in cycles of 100 ms. To account for potential chromatic effects, both active elements were measured in green monochromatic light (555 nm).…”

Section: Appendix: Deformable Mirror and Spatial Light Modulatormentioning

confidence: 99%

Tunable lenses: dynamic characterization and fine-tuned control for high-speed applications

Dorronsoro¹,

Barcala²,

Gambra³

et al. 2019

Opt. Express

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Tunable lenses are becoming ubiquitous, in applications including microscopy, optical coherence tomography, computer vision, quality control, and presbyopic corrections. Many applications require an accurate control of the optical power of the lens in response to a time-dependent input waveform. We present a fast focimeter (3.8 KHz) to characterize the dynamic response of tunable lenses, which was demonstrated on different lens models. We found that the temporal response is repetitive and linear, which allowed the development of a robust compensation strategy based on the optimization of the input wave, using a linear time-invariant model. To our knowledge, this work presents the first procedure for a direct characterization of the transient response of tunable lenses and for compensation of their temporal distortions, and broadens the potential of tunable lenses also in high-speed applications.

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Comparison of vision through surface modulated and spatial light modulated multifocal optics

Cited by 27 publications

References 32 publications

Optical and Visual Quality With Physical and Visually Simulated Presbyopic Multifocal Contact Lenses

Optical and Visual Quality With Physical and Visually Simulated Presbyopic Multifocal Contact Lenses

VioBio lab adaptive optics: technology and applications by women vision scientists

Tunable lenses: dynamic characterization and fine-tuned control for high-speed applications

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