Correction of presbyopia: old problems with old (and new) solutions

Kollbaum, Pete; Bradley, Arthur

doi:10.1111/cxo.12987

Cited by 34 publications

(24 citation statements)

References 168 publications

(346 reference statements)

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“…4 Some manufacturers offer MCLs with slight variations of the design according to age, to account for age-dependent changes in pupil diameter, and to refractive error. 5 Despite the increasing number of MCLs, 6,7 prediction of their success prior to being prescribed in subjects is complicated. Several reports evaluate MCLs on eye in terms of through-focus (TF) visual acuity (VA) or contrast sensitivity measurements, in some cases in comparison with monovision (one eye corrected for far, the other one for near).…”

Section: Introductionmentioning

confidence: 99%

“…Despite the increasing number of MCLs, 6 , 7 prediction of their success prior to being prescribed in subjects is complicated. Several reports evaluate MCLs on eye in terms of through-focus (TF) visual acuity (VA) or contrast sensitivity measurements, in some cases in comparison with monovision (one eye corrected for far, the other one for near).…”

Section: Introductionmentioning

confidence: 99%

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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%

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.

View full text Add to dashboard Cite

show abstract

“… 45 , 57 It also negatively affects quality of vision at all ranges and depth perception. 58 As a consequence, it may not be suitable for patients in whom binocular vision and depth perception are particularly critical to their career or lifestyle. There is evidence that monovision may affect the ability to properly perceive motion, especially at far distance.…”

Section: Varying the Refractive Power Between Eyesmentioning

confidence: 99%

Presbyopia Treatments by Mechanism of Action: A New Classification System Based on a Review of the Literature

Chang¹,

Waring²,

Hom³

et al. 2021

OPTH

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Presbyopia, a loss of accommodative ability associated with aging, is a significant cause of vision impairment globally. At the clinical level, it is a frustrating and difficult issue that negatively impacts patients' quality of life. Less appreciated is the fact that loss of accommodative ability and its current treatments methods may present safety concerns, for example, increasing the risk of falls. Therefore, a more complete understanding of treatment options with respect to how they relate to the natural ability of the eye is needed to improve decision making and to aid clinicians in individualizing treatment options. This article reviews the options for expanding functional through focus-a term coined to describe the ability of the eye to see at all distances with minimal latency-by how they vary the refractive power over time, across the visual field, between eyes, or across a range of distances.

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“…Many middle-aged people may suffer presbyopia and dry eye. Presbyopia continuously progresses with aging and eventually requires most people to use near visual aids, in contrast to cataract and glaucoma, other common organic causes of loss of vision, that are treated by medical or surgical intervention [1][2][3]. Difficulty focusing is usually first experienced during the 30s to 40s depending on refraction and other visual factors in daily life and work.…”

Section: Introductionmentioning

confidence: 99%

Sleep and subjective happiness between the ages 40 and 59 in relation to presbyopia and dry eye

et al. 2021

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Purpose The aim of this study was to explore the status of quality of life between the ages 40–59 in relation to presbyopia and dry eye. Methods Near add power and preferred contact lens power were examined in 219 participants at three clinics. 2000 participants completed a web-based survey on presbyopic symptoms, symptomatic dry eye, sleep quality, and subjective happiness. Results Mean preferred corrected visual acuity was less than 20/20 in women (vs men, P<0.01) who were more often prescribed under-corrected contact lenses, whereas men preferred full correction. According to the annual progression rate of near add power in men (0.1468D/year), the estimated difference in presbyopia progression between men and women was 0.75 years in the right eye, and 1.69 years in the left eye, implying men might suffer presbyopia earlier than women due to higher myopic power of daily use contact lenses. The web-based survey revealed that men reported lower subjective happiness than women (P<0.001) and earlier onset of presbyopic symptoms by 1.1–1.7 years (P<0.05). Men received their first reading glasses 0.8 years earlier than women (P = 0.066). Multiple regression analysis demonstrated that awareness of presbyopic symptoms, visual burden, and dry eyes were significantly correlated with poor sleep quality and subjective happiness. Conclusion Presbyopia and dry eye were significantly associated with sleep quality and subjective happiness in middle-adulthood.

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Correction of presbyopia: old problems with old (and new) solutions

Cited by 34 publications

References 168 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

Presbyopia Treatments by Mechanism of Action: A New Classification System Based on a Review of the Literature

Sleep and subjective happiness between the ages 40 and 59 in relation to presbyopia and dry eye

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