The response of the accommodation system to digital and print images

African Vision and Eye Health

Field Value
Title The response of the accommodation system to digital and print images
Creator Devenier, Minette Hansraj, Rekha Rasengane, Tuwani
Subject Optometry accommodation; accommodation response; amplitude of accommodation; accommodation facility; iPad; paper
Description Background: The transition from traditional print medium to a digital medium may affect the accommodative response (AR) because of the differences in the characteristics of the targets viewed.Aim: This study investigated how the accommodation system responded to targets displayed on a tablet computer compared to that on paper.Setting: The study was conducted amongst students at a university in South Africa.Methods: Using a quantitative, cross-sectional study the AR, amplitude of accommodation (AA), and accommodative facility (AF) were assessed with a target on an iPad and a paper-based one on a non-probability sample of 30 university students. Data was analysed using descriptive statistics and Bland Altman plots.Results: The median AR with a tablet was +0.25 dioptre (D) compared to +0.21 D with the paper-based target. This difference was neither statistically nor clinically significant. The median AA with a tablet computer target was 10.59 D and 9.85 D with a paper-based target. While this difference was statistically significant (p = 0.002), Bland Altman analysis revealed comparable measurements with both types of targets. Both Wilcoxon Signed Ranks Test (p = 0.462) and Bland Altman analysis found comparable medians for AF obtained with a target on paper (7.67 cycles per minute [cpm]) and a target on the tablet computer (7.17 cpm) to be comparable.Conclusion: The accuracy, strength and flexibility of accommodation were comparable for tablet computer and paper-based targets.
Publisher AOSIS
Date 2021-11-26
Type info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion — quantitative research
Format text/html application/epub+zip text/xml application/pdf
Identifier 10.4102/aveh.v80i1.662
Source African Vision and Eye Health; Vol 80, No 1 (2021); 6 pages 2410-1516 2413-3183
Language eng
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Coverage South Africa 2015-2016 18-23 years; males and females; all races; university students
Rights Copyright (c) 2021 Minette Devenier, Rekha Hansraj, Tuwani Rasengane