The Effect of a Head-mounted Low Vision Device on Visual Function

Optometry and Vision Science : Official Publication of the American Academy of Optometry
Walter WittichGislin Dagnelie

Abstract

Head-mounted low vision devices have received considerable attention in recent years owing to rapidly developing technology, facilitating ease of use and functionality. Systematic clinical evaluations of such devices remain rare but are needed to steer future device development. The purpose of this study was to investigate, in a multicenter prospective trial, the short- and medium-term effects of a head-worn vision enhancement device (eSight Eyewear). Participants aged 13 to 75 years with stable vision (distance acuity, 20/60 to 20/400; visual field diameter >20°) were recruited across six sites. Data were collected at baseline (no device), at fitting (with device), and after 3 months of everyday use. Outcome measures were visual ability measured by the Veterans Affairs Low Vision Visual Functioning Questionnaire 48, distance acuity (Early Treatment Diabetic Retinopathy Study), reading performance (MNREAD chart), contrast sensitivity (MARS chart), face recognition, and a modified version of the Melbourne Low Vision Activities of Daily Living (ADL) Index. Among the 51 participants, eSight introduction immediately improved distance acuity (0.74 ± 0.28 logMAR), contrast sensitivity (0.57 ± 0.53 log units), and critical print size ...Continue Reading

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Citations

Sep 1, 2018·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Bradley Dougherty
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Nov 7, 2019·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Michael D CrosslandAndrew R Webster
Dec 31, 2019·Disability and Rehabilitation·Marie-Céline LorenziniWalter Wittich
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Mar 5, 2021·Biomedical Optics Express·Güneş AydındoğanHakan Ürey
Mar 29, 2021·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Francisco M CostelaRussell L Woods
Jun 4, 2021·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Marie-Céline Lorenzini, Walter Wittich
Jun 4, 2021·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Marie-Céline Lorenzini, Walter Wittich
Aug 21, 2021·Disability and Rehabilitation. Assistive Technology·Anne MacnamaraTobias Loetscher
Sep 7, 2021·Frontiers in Neuroscience·Anne MacnamaraTobias Loetscher

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Methods Mentioned

BETA
liquid-crystal display

Clinical Trials Mentioned

NCT02616900

Software Mentioned

JASP
eSight
eSight Eyewear
MNREAD

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