Spherical Aberration Customization to Extend the Depth of Focus With a Clinical Adaptive Optics Visual Simulator

Hervella, Lucía; Villegas, Eloy A.; Robles, Consuelo; Artal, Pablo

doi:10.3928/1081597x-20200212-02

Cited by 24 publications

(24 citation statements)

References 38 publications

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“…Zhang et al demonstrated that ( 33 ) an aspheric IOL with a low negative or zero primary spherical aberration is recommended for cataract patients with high myopia. Hervella et al ( 34 ) found that negative values of spherical aberration extend the depth of focus in different ways depending on each patient. Tzamalis et al ( 35 ) revealed that Bioline yellow IOL indicated lower contrast sensitivity under mesopic conditions when glare was applied but resulted in less trefoil aberrations after uneventful cataract surgery.…”

Section: Discussionmentioning

confidence: 99%

Visual quality analysis using the Chinese Catquest-9SF scale following different spherical aberration IOL implantation

Lou

Hua

et al. 2022

Front. Public Health

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PurposeBased on the Chinese version of the Catquest-9SF scale, the contrast sensitivity meter and wavefront aberrometer were used to evaluate the visual quality of cataract patients implanted with different spherical aberrations IOL.DesignRetrospective Observational Study.MethodsPatients who had the lens implantation in our department from January 2020 to December 2021 were enrolled. All patients underwent uncorrected visual acuity, best corrected visual acuity and slit lamp microscope, high-order aberrations and contrast sensitivity test. The KR-1W wavefront analyzer (Topcon Medical System, Tokyo, Japan) was used to measure wavefront aberrations post-operation. The Chinese Catquest-9SF scale was used to score the postoperative visual satisfaction of the patients.Results145 patients were screened according to the exclusion criteria, including 51 patients in the zero aspherical IOL (SOFTEC HD) group, 42 patients in the negative aspherical IOL (ZCB00) group, and a total of 52 patients in the spherical IOL (HQ-201HEP) group. The score was the highest in the zero spherical aberration group, followed by the negative spherical aberration group with the lowest scores in the spherical IOL group. Higher-order aberrations are relatively low in eyes implanted with the zero spherical aberration group. Contrast sensitivity with spherical lenses under glare-free and glare conditions was lower than those with aspheric lenses, and at higher frequencies the zero-aberration aspheric lens performed the best.ConclusionThe Chinese Catquest-9SF scale provides an indication of visual quality after aspheric IOL implantation.

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Section: Discussionmentioning

confidence: 99%

Visual quality analysis using the Chinese Catquest-9SF scale following different spherical aberration IOL implantation

Lou

Hua

et al. 2022

Front. Public Health

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“…Figure 4(A) shows a schematic diagram of the binocular version of the AO visual simulator. New capabilities of the AOVS, include extended defocus range of operation with the addition of tunable lenses [ 67 ] and we have contributed to the transition to a commercial clinical apparatus developed by Voptica SL, the VAO [ 68 ]. Beyond the correction of aberrations, intraocular scatter affects the eye’s image quality, with special severity in cataracts.…”

Section: Murcia University (Loum) Adaptive Optics Visual Simulatorsmentioning

confidence: 99%

Adaptive optics visual simulators: a review of recent optical designs and applications [Invited]

Marcos¹,

Artal

Atchison

et al. 2022

Biomed. Opt. Express

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In their pioneering work demonstrating measurement and full correction of the eye’s optical aberrations, Liang, Williams and Miller, [JOSA A 14, 2884 (1997)10.1364/JOSAA.14.002884] showed improvement in visual performance using adaptive optics (AO). Since then, AO visual simulators have been developed to explore the spatial limits to human vision and as platforms to test non-invasively optical corrections for presbyopia, myopia, or corneal irregularities. These applications have allowed new psychophysics bypassing the optics of the eye, ranging from studying the impact of the interactions of monochromatic and chromatic aberrations on vision to neural adaptation. Other applications address new paradigms of lens designs and corrections of ocular errors. The current paper describes a series of AO visual simulators developed in laboratories around the world, key applications, and current trends and challenges. As the field moves into its second quarter century, new available technologies and a solid reception by the clinical community promise a vigorous and expanding use of AO simulation in years to come.

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“…The experimental measurements in this work were taken using the VAO adaptive optics visual simulator (Voptica S.L., Murcia, Spain). This clinical instrument allows to place optical stimuli different vergences through a micro display and to show to the patient its image through any optical phase profile [35,36]. The stimulus was an optotype with three high-contrast letters (tumbling Es) of different sizes corresponding to visual acuities of 0.4; 0.2 and 0.0 logMAR units.…”

Section: Adaptive Optics Visual Simulatormentioning

confidence: 99%

A new trifocal corneal inlay for presbyopia

Furlan

Montagud-Martínez

Ferrando

et al. 2021

Sci Rep

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Corneal inlays (CIs) are the most recent surgical procedure for the treatment of presbyopia in patients who want complete independence from the use of glasses or contact lenses. Although refractive surgery in presbyopic patients is mostly performed in combination with cataract surgery, when the implantation of an intraocular lens is not necessary, the option of CIs has the advantage of being minimally invasive. Current designs of CIs are, either: small aperture devices, or refractive devices, however, both methods do not have good performance simultaneously at intermediate and near distances in eyes that are unable to accommodate. In the present study, we propose the first design of a trifocal CI, allowing good vision, at the same time, at far, intermediate and near vision in presbyopic eyes. We first demonstrate the good performance of the new inlay in comparison with a commercially available CI by using optical design software. We next confirm experimentally the image forming capabilities of our proposal employing an adaptive optics based optical simulator. This new design also has a number of parameters that can be varied to make personalized trifocal CI, opening up a new avenue for the treatment of presbyopia.

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Spherical Aberration Customization to Extend the Depth of Focus With a Clinical Adaptive Optics Visual Simulator

Cited by 24 publications

References 38 publications

Visual quality analysis using the Chinese Catquest-9SF scale following different spherical aberration IOL implantation

Visual quality analysis using the Chinese Catquest-9SF scale following different spherical aberration IOL implantation

Adaptive optics visual simulators: a review of recent optical designs and applications [Invited]

A new trifocal corneal inlay for presbyopia

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