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Taylor DJ, Alquiza PJ, Jones PR, Wilson I, Bi W, Sim DA, Crabb DP. Tablet-based tests of everyday visual function in a diabetic macular oedema (DME) clinic waiting area: A feasibility study. Ophthalmic Physiol Opt 2024; 44:388-398. [PMID: 38131130 DOI: 10.1111/opo.13261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 11/28/2023] [Accepted: 11/29/2023] [Indexed: 12/23/2023]
Abstract
PURPOSE (1) To assess the feasibility of conducting tablet-based vision tests in hospital clinic waiting areas; (2) To test the hypothesis that increasing severity of diabetic macular oedema (DME) is associated with the performance of tablet-based surrogates of everyday tasks and self-reported visual function. METHODS Sixty-one people with mild (n = 28), moderate (n = 24) or severe (n = 9) DME performed two tablet-based tests of 'real-world' visual function (visual search and face recognition) while waiting for appointments in a hospital outpatient clinic. Participants also completed a tablet-based version of a seven-item, visual-functioning (VF-7) patient-reported outcome measure. Test performance was compared to previously published 99% normative limits for normally sighted individuals. RESULTS Thirty-four participants (56%; 95% confidence interval [CI] 43%-68%) exceeded normative limits for visual search, while eight (13%; 95% CI 65%-24%) exceeded normative limits for face discrimination. Search duration was significantly longer for people with severe DME than those with mild and moderate DME (p = 0.01). Face discrimination performance was not significantly associated with DME severity. VF-7 scores were statistically similar across DME severity groups. Median time to complete all elements (eligibility screening, both tablet-based tasks and the VF-7) was 22 (quartiles 19, 25) min. Further, 98% and 87% of participants, respectively, reported the search task and face discrimination task to be enjoyable, while 25% and 97%, respectively, reported finding the two tasks to be difficult. CONCLUSIONS Portable tablet-based tests are quick, acceptable to patients and feasible to be performed in a clinic waiting area with minimal supervision. They have the potential to be piloted in patients' homes for self-monitoring.
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Affiliation(s)
- Deanna J Taylor
- Division of Optometry and Visual Sciences, School of Health Sciences, City, University of London, London, UK
| | | | - Pete R Jones
- Division of Optometry and Visual Sciences, School of Health Sciences, City, University of London, London, UK
| | - Iain Wilson
- Nuffield Laboratory of Ophthalmology, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
- Oxford Eye Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Wei Bi
- Division of Optometry and Visual Sciences, School of Health Sciences, City, University of London, London, UK
| | - Dawn A Sim
- Moorfields Eye Hospital NHS Foundation Trust, London, UK
| | - David P Crabb
- Division of Optometry and Visual Sciences, School of Health Sciences, City, University of London, London, UK
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Psotta R, Dostál D, Sarvestan J, Prycl D, Kašpar O, Křížová I. Evaluation of Predictive Motor Control With Two Touchscreen Tablet-Based Tests: Reliability and Validity in School-Aged Children. Percept Mot Skills 2023; 130:283-300. [PMID: 36168104 DOI: 10.1177/00315125221130815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
As predictive motor control is an important index of neuromotor development and maturation, we developed two touchscreen tablet-based tests of this function. Our aim was to investigate the reliability and validity of both a rapid manual interception test and a pursuit tracking test, using a sample of 124 children (62 boys and 62 girls) from two age groups (7-8-year-oldss and 9-10-year-olds). Participants performed both tablet tests with a stylus (sample rate 100 Hz) with both a visible and a temporarily invisible moving target. Confirmatory factor analyses and omega coefficients showed that both tests were univariate methods that provided a reliable assessment of the latent factor related to predictive visuomotor control. As would be expected, compared to younger children, older children performed better on both manual interception and pursuit tracking. The correlations between the latent factors of the two tests at 95% confidence intervals (-.276, -.608) suggested shared variance. Thus, the touchscreen-tablet based tests of rapid manual interception and manual pursuit tracking appear psychometrically suitable for assessing the neuromotor ability of predictive control in 7-10-year-old children.
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Affiliation(s)
- Rudolf Psotta
- Department of Natural Sciences in Kinanthropology, Faculty of Physical Culture, 48207Palacký University Olomouc, Olomouc, Czech Republic.,College of Physical Education and Sport PALESTRA, Prague, Czech Republic
| | - Daniel Dostál
- Department of Psychology, Faculty of Arts, 48207Palacký University Olomouc, Olomouc, Czech Republic
| | - Javad Sarvestan
- Department of Natural Sciences in Kinanthropology, Faculty of Physical Culture, 48207Palacký University Olomouc, Olomouc, Czech Republic
| | - David Prycl
- BALUO Application Center, Faculty of Physical Culture, 48207Palacký University Olomouc, Olomouc, Czech Republic
| | - Ondřej Kašpar
- Department of Natural Sciences in Kinanthropology, Faculty of Physical Culture, 48207Palacký University Olomouc, Olomouc, Czech Republic
| | - Ivana Křížová
- Department of Natural Sciences in Kinanthropology, Faculty of Physical Culture, 48207Palacký University Olomouc, Olomouc, Czech Republic
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Sumalini R, Satgunam P, Subramanian A, Conway M. Clinical Utility of ‘Peekaboo Vision’ Application for Measuring Grating Acuity in Children with Down Syndrome. Br Ir Orthopt J 2022; 18:18-26. [PMID: 35601243 PMCID: PMC9075052 DOI: 10.22599/bioj.264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 04/05/2022] [Indexed: 11/30/2022] Open
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Higgins BE, Taylor DJ, Bi W, Binns AM, Crabb DP. Novel computer-based assessments of everyday visual function in people with age-related macular degeneration. PLoS One 2020; 15:e0243578. [PMID: 33284855 PMCID: PMC7721163 DOI: 10.1371/journal.pone.0243578] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 11/23/2020] [Indexed: 11/18/2022] Open
Abstract
PURPOSE To test the hypothesis that the performance in novel computer-based tasks of everyday visual function worsens with disease severity in people with non-neovascular age-related macular degeneration. METHODS Participants with and without non-neovascular age-related macular degeneration (≥60 years, minimum logMAR binocular visual acuity 0.7) performed a series of standard visual function tests and two novel computer-based tasks. In a visual search task, participants had to locate an image of a single real-world object within an array of 49 distractor images. Next, in a series of simulated dynamic driving scenes, participants were asked to identify one or two approaching real-world road signs and then select these road signs from four options. Outcome measures were median response times and total correct responses. RESULTS Forty-nine participants had no macular disease (n = 11), early/intermediate age-related macular degeneration (n = 16) or geographic atrophy (n = 22). Groups were age-similar with median (interquartile range) logMAR visual acuity of 0.00 (-0.08,0.12), 0.13 (-0.08,0.70) and 0.32 (0.12,0.70) respectively. Median (interquartile range) visual search response times were 1.9 (1.0,2.4), 1.8 (1.1,3.7) and 2.4 (1.2,6.0) seconds respectively. Median (interquartile range) road sign response times (single road signs) were 1.2 (0.4,1.7), 1.5 (0.9,2.8) and 1.8 (1.0,5.5) seconds respectively. Median (interquartile range) road sign response times (double road signs) were 1.7 (0.7,2.4), 2.3 (1.2,3.1) and 2.5 (1.7,6) seconds respectively. Participants with geographic atrophy recorded slower response times in all tasks and over 50% performed outside the normative limit for task performance. There were no significant differences between groups in total correct responses across all tasks. CONCLUSIONS In a novel computer-based assessment, people with increasing severity of age-related macular degeneration take longer to perform visual search of everyday objects and take longer to identify road signs than those with no age-related macular degeneration. These novel assessments could be useful as patient-relevant, secondary outcomes for clinical trials.
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Affiliation(s)
- Bethany E Higgins
- Optometry and Visual Sciences, School of Health Sciences, University of London, London, United Kingdom
| | - Deanna J Taylor
- Optometry and Visual Sciences, School of Health Sciences, University of London, London, United Kingdom
| | - Wei Bi
- Optometry and Visual Sciences, School of Health Sciences, University of London, London, United Kingdom
| | - Alison M Binns
- Optometry and Visual Sciences, School of Health Sciences, University of London, London, United Kingdom
| | - David P Crabb
- Optometry and Visual Sciences, School of Health Sciences, University of London, London, United Kingdom
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Jones PR, Tigchelaar I, Demaria G, Wilson I, Bi W, Taylor DJ, Crabb DP. Refinement and preliminary evaluation of two tablet-based tests of real-world visual function. Ophthalmic Physiol Opt 2019; 40:35-46. [PMID: 31879994 PMCID: PMC7028122 DOI: 10.1111/opo.12658] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 11/09/2019] [Indexed: 01/07/2023]
Abstract
Purpose To describe, refine, evaluate, and provide normative control data for two freely available tablet‐based tests of real‐world visual function, using a cohort of young, normally‐sighted adults. Methods Fifty young (18–40 years), normally‐sighted adults completed tablet‐based assessments of (1) face discrimination and (2) visual search. Each test was performed twice, to assess test‐retest repeatability. Post‐hoc analyses were performed to determine the number of trials required to obtain stable estimates of performance. Distributions were fitted to the normative data to determine the 99% population‐boundary for normally sighted observers. Participants were also asked to rate their comprehension of each test. Results Both tests provided stable estimates in around 20 trials (~1–4 min), with only a further reduction of 14%–17% in the 95% Coefficient of Repeatability (CoR95) when an additional 40 trials were included. When using only ~20 trials: median durations for the first run of each test were 191 s (Faces) and 51 s (Search); test‐retest CoR95 were 0.27 d (Faces) and 0.84 s (Search); and normative 99% population‐limits were 3.50 d (Faces) and 3.1 s (Search). No participants exhibited any difficulties completing either test (100% completion rate), and ratings of task‐understanding were high (Faces: 9.6 out of 10; Search: 9.7 out of 10). Conclusions This preliminary assessment indicated that both tablet‐based tests are able to provide simple, quick, and easy‐to‐administer measures of real‐world visual function in normally‐sighted young adults. Further work is required to assess their accuracy and utility in older people and individuals with visual impairment. Potential applications are discussed, including their use in clinic waiting rooms, and as an objective complement to Patient Reported Outcome Measures (PROMs).
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Affiliation(s)
- Pete R Jones
- Division of Optometry and Visual Science, School of Health Sciences, City, University of London, London, UK
| | - Iris Tigchelaar
- Department of Ophthalmology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands.,Ocusweep, Turku, Finland.,Doctoral Program in Clinical Research, University of Turku and Turku University Hospital, Turku, Finland
| | - Giorgia Demaria
- Department of Ophthalmology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands.,Graduate School of Medical Sciences (Research School of Behavioral and Cognitive Neurosciences), University of Groningen, Groningen, the Netherlands
| | - Iain Wilson
- Nuffield Laboratory of Ophthalmology, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK.,Oxford Eye Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Wei Bi
- Division of Optometry and Visual Science, School of Health Sciences, City, University of London, London, UK
| | - Deanna J Taylor
- Division of Optometry and Visual Science, School of Health Sciences, City, University of London, London, UK
| | - David P Crabb
- Division of Optometry and Visual Science, School of Health Sciences, City, University of London, London, UK
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