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Portable Perimetry Using Eye-Tracking on a Tablet Computer—A Feasibility Assessment

Jones, PR; Smith, ND; Bi, W; Crabb, DP; (2019) Portable Perimetry Using Eye-Tracking on a Tablet Computer—A Feasibility Assessment. Translational Vision Science & Technology , 8 (1) , Article 17. 10.1167/tvst.8.1.17. Green open access

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Abstract

PURPOSE: Visual field (VF) examination by standard automated perimetry (SAP) is an important method of clinical assessment. However, the complexity of the test, and its use of bulky, expensive equipment makes it impractical for case-finding. We propose and evaluate a new approach to paracentral VF assessment that combines an inexpensive eye tracker with a portable tablet computer (“Eyecatcher”). METHODS: Twenty-four eyes from 12 Glaucoma patients, and 12 eyes from six age-similar controls were examined. Participants were tested monocularly (once per eye), with both the novel Eyecatcher test and traditional SAP (HFA SITA standard 24-2). For Eyecatcher, the participant’s task was to simply to look at a sequence of fixed-luminance dots, presented relative to the current point of fixation. Start and end fixations were used to determine locations where stimuli were seen/unseen, and to build a continuous map of sensitivity loss across a VF of approximately 20°. RESULTS: Eyecatcher was able to clearly separate patients from controls, and the results were consistent with those from traditional SAP. In particular, mean Eyecatcher scores were strongly correlated with MD scores (r2 = 0.64, P < 0.001), and there was good concordance between corresponding visual field locations (~84%). Participants reported that Eyecatcher was more enjoyable, easier to perform, and less tiring than SAP (all P < 0.001). CONCLUSIONS: Portable perimetry using an inexpensive eye tracker and a tablet computer is feasible, although possible means of improvement are suggested. Translational Relevance: Such a test could have significant utility as a case finding device.

Type: Article
Title: Portable Perimetry Using Eye-Tracking on a Tablet Computer—A Feasibility Assessment
Open access status: An open access version is available from UCL Discovery
DOI: 10.1167/tvst.8.1.17
Publisher version: https://doi.org/10.1167/tvst.8.1.17
Language: English
Additional information: Copyright © 2019 The Authors. This work is licensed under a Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0).
Keywords: glaucoma; visual fields; static perimetry; eye-movements
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Institute of Ophthalmology
URI: http://discovery.ucl.ac.uk/id/eprint/10065485
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