Reading aids for adults with low vision

Virgili, Gianni; Acosta, R.; Grover, Lori L; Bentley, Sharon A; Giacomelli, Giovanni

doi:10.1002/14651858.cd003303.pub3

Cited by 61 publications

(61 citation statements)

References 63 publications

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“…A standard LogMAR chart is used to determine the best possible visual acuity in each eye to test central visual acuity [34]. The best-corrected visual acuity measurements of SLE and SS patients were within the normal range (0.0 ± 0.1 log and 0.0 ± 0.1 log, respectively) and similar to those in HC (0.0 ± 0.1 log).…”

Section: Resultsmentioning

confidence: 99%

Evidence for the Detection of Subclinical Retinal Involvement in Systemic Lupus Erythematosus and Sjögren Syndrome: A Potential Association with Therapies

Conigliaro

Triggianese

Draghessi

et al. 2018

Int Arch Allergy Immunol

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Background: Retinal involvement in systemic lupus erythematosus (SLE) and Sjögren syndrome (SS) may be subclinical and thus underdiagnosed. Objectives: We aimed at evaluating morphological and functional visual abnormalities in a cohort of SLE and SS patients in the absence of an overt clinical visual impairment. We also investigated potential associations between retinal disorders and disease activity, organ involvement, and treatment with steroid and/or hydroxychloroquine. Methods: The study comprised 42 SLE and 36 primary SS patients and 76 healthy controls (HC). Ophthalmological examination, standard automated perimetry, spectral-domain optical coherence tomography, and fundus perimetry were performed. Results: Retinal thickness of the posterior pole was not different between SLE and HC groups, but it was reduced in the SS group compared with both the HC and the SLE group. In SLE and SS patients, mean defect and pattern standard deviation by standard automated perimetry were higher than in HC. Visual field index values were lower in both SLE and SS patients than in HC. SLE patients with nephritis displayed increased mean defect and pattern standard deviation and reduced visual field index values compared to patients without nephritis. In SLE and SS patients, fundus perimetry differential sensitivity was reduced, and mean defect values were higher than in HC. Disturbances in fundus perimetry in the SLE group were more prevalent in steroid-naïve patients and in SS patients who received a cumulative hydroxychloroquine dose > 1,000 g. Conclusions: Functional eye impairment was demonstrated in SLE patients, possibly associated with kidney involvement. In SLE, corticosteroids might exert a protective role. Morphological alterations and functional impairment were detected in SS patients, which may be linked to hydroxychloroquine toxicity.

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Section: Resultsmentioning

confidence: 99%

Evidence for the Detection of Subclinical Retinal Involvement in Systemic Lupus Erythematosus and Sjögren Syndrome: A Potential Association with Therapies

Conigliaro

Triggianese

Draghessi

et al. 2018

Int Arch Allergy Immunol

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“…A reduction in reading speed could be explained by reduced visual span, or by image movement. A 2018 review of studies evaluating reading aids for people with low vision found that reading speed may be highest in stand‐mounted electronic CCTVs compared to optical devices, with further evidence for longer reading durations and better ease of use . Comparing stand‐mounted CCTVs and head‐mounted devices (HMDs), the review reported similar performance between the two: for HMDs, on average 66 words per minute and near visual acuity of 0.92 logMAR; for CCTVs, 3.1 words per minute more for reading speed and 0.05 logMAR more for near visual acuity.…”

Section: Discussionmentioning

confidence: 99%

Benefit of an electronic head‐mounted low vision aid

Crossland

Starke

Imielski³

et al. 2019

Ophthalmic Physiologic Optic

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Purpose To evaluate the efficacy of electronic head‐mounted low vision aid (e‐LVA) SightPlus (GiveVision, UK, givevision.net) and to determine which people with low vision would see themselves likely using an e‐LVA like this. Methods Sixty participants with low vision aged 18 to 93 used SightPlus during an in‐clinic study session based on a mixed methods design. Visual acuity (ETDRS), contrast sensitivity (Pelli‐Robson) and reading performance (MNREAD) were measured binocularly at baseline (no device), with the device in ‘normal’ mode (zoom only), and with preferred enhanced mode (zoom and one of four digital image enhancements). At the end of the session, a short questionnaire recorded willingness to use an e‐LVA like SightPlus, potential use cases, positive/negative comments and adverse effects. Results Binocular distance visual acuity improved significantly by 0.63 logMAR on average (p < 0.0001) to 0.20 logMAR. Contrast sensitivity improved significantly by 0.22 log units (p < 0.0001) to 1.21 log units with zoom only and by 0.40 log units to 1.37 log units with zoom and preferred image enhancement. Reading performance improved significantly for near visual acuity and critical print size (p < 0.015), although reading speed significantly decreased (p < 0.0001). Nearly half (47%) of the participants indicated they would use an e‐LVA like SightPlus, especially for television, reading and entertainment (e.g. theatre). Multivariate logistic regression showed that proportion of lifetime affected by sight loss, baseline contrast sensitivity and use of electronic LVAs explained 41% of the variation in willingness to use. Conclusions SightPlus improves visual function in people with low vision and would be used in its current form by one half of the people who tried it. Adverse effects were infrequent and resolved when the device was removed. Future work should focus on comparing e‐LVAs through repeatable real‐world tasks and impact on quality of life.

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“…According to the World Health Organisation criteria for defining visual ability (Virgili et al . ), most dogs in this study would be classified as having poor vision. While the apparent lack of any visual impairment in all dogs assessed may be attributed to the paucity of appropriate measures of vision in domestic animal species, it is essential to consider the other components of vision, and that the relative importance of these factors varies considerably between species.…”

Section: Discussionmentioning

confidence: 94%

A forced‐choice preferential looking task for the assessment of vision in dogs: pilot study

Graham

Byosiere

Feng

et al. 2018

J of Small Animal Practice

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Objectives To describe preliminary use of a forced‐choice preferential looking task for the clinical assessment of vision in dogs. Materials and Methods The vision of 18 pet dogs was investigated in two separate studies using a forced‐choice preferential looking task: multiple observers watched eye, head and body movements on video recordings to identify cues suggesting when a dog had seen the feature of interest. Human observer reliability was determined using eight dogs and computer‐generated stimuli. Visual acuity was assessed using computer‐generated grating stimuli: in real‐time, an observer watched each dog's eye movement patterns and behaviour to decide whether each grating was seen. Stimuli were presented in a step‐wise manner and were controlled by the observer. Acuity was estimated as the highest spatial frequency the dog was determined to have seen. Results Median estimated visual acuity was better at 1 m compared to that at 3 m. Average test time was longer at a 3‐m distance than at 1 m. Inter‐ and intra‐observer reliability was better from 1 m than from 3 m. Clinical Significance Preliminary use of a forced‐choice preferential looking task for measurement of visual acuity in dogs has potential use as a clinical tool for the assessment of vision in dogs.

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Reading aids for adults with low vision

Cited by 61 publications

References 63 publications

Evidence for the Detection of Subclinical Retinal Involvement in Systemic Lupus Erythematosus and Sjögren Syndrome: A Potential Association with Therapies

Evidence for the Detection of Subclinical Retinal Involvement in Systemic Lupus Erythematosus and Sjögren Syndrome: A Potential Association with Therapies

Benefit of an electronic head‐mounted low vision aid

A forced‐choice preferential looking task for the assessment of vision in dogs: pilot study

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