Measuring the Difficulty Watching Video With Hemianopia and an Initial Test of a Rehabilitation Approach

Translational Vision Science & Technology
Francisco M CostelaRussell L Woods

Abstract

If you cannot follow the story when watching a video, then the viewing experience is degraded. We measured the difficulty of following the story, defined as the ability to acquire visual information, which is experienced by people with homonymous hemianopia (HH). Further, we proposed and tested a novel rehabilitation aid. Participants watched 30-second directed video clips. Following each video clip, subjects described the visual content of the clip. An objective score of information acquisition (IA) was derived by comparing each new response to a control database of descriptions of the same clip using natural language processing. Study 1 compared 60 participants with normal vision (NV) to 24 participants with HH to test the hypothesis that participants with HH would score lower than NV participants, consistent with reports from people with HH that describe difficulties in video watching. In the second study, 21 participants with HH viewed clips with or without a superimposed dynamic cue that we called a content guide. We hypothesized that IA scores would increase using this content guide. The HH group had a significantly lower IA score, with an average of 2.8, compared with 4.3 shared words of the NV group (mixed-effects regre...Continue Reading

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Citations

Jan 27, 2019·Investigative Ophthalmology & Visual Science·Francisco M CostelaRussell L Woods
Mar 29, 2021·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Francisco M CostelaRussell L Woods
Jul 30, 2021·Translational Vision Science & Technology·Francisco M CostelaRussell L Woods

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