TY - JOUR
T1 - Enhancing visual performance of hemianopia patients using overview window
AU - Zhao, Xi
AU - Fujishiro, Issei
AU - Go, Kentaro
AU - Toyoura, Masahiro
AU - Kashiwagi, Kenji
AU - Mao, Xiaoyang
N1 - Funding Information:
We thank the twelve volunteers who participated in this study’s experiments. In addition, we thank the anonymous reviewers for their valuable comments on our early manuscript. This work has been supported in part by JSPS KAKENHI under Grant-in-Aid for Scientific Research (A) No. 17H00738 and Grant-in-Aid for Challenging Research (Pioneering) No. 19H05472.
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/6
Y1 - 2020/6
N2 - Visual field defect (VFD) is a type of ophthalmic disease that causes the loss of part of the patient's field of view (FoV). In this paper, we propose a method to enlarge the restricted FoV with an optical see-through head-mounted display (OST-HMD) equipped with a camera that captures an overview and overlays it on the persisting FoV. Because the overview window occludes the real background scene, it is important to create a balance between the augmented contextual information and the unscreened local information. We recruited twelve participants and conducted an experiment to seek the best size, position, and opacity for the overview window through a Whac-A-Mole task (a touchscreen game). We found that the performance was better when the overview window was of medium size (FoV of 9.148∘ × 5.153∘, nearly one third of FoV of the used OST-HMD) and placed lower in the visual field. Either too large or too small a size decreases the performance. The performance increases with increased opacity. The obtained results can legitimate the default setting for the overview window.
AB - Visual field defect (VFD) is a type of ophthalmic disease that causes the loss of part of the patient's field of view (FoV). In this paper, we propose a method to enlarge the restricted FoV with an optical see-through head-mounted display (OST-HMD) equipped with a camera that captures an overview and overlays it on the persisting FoV. Because the overview window occludes the real background scene, it is important to create a balance between the augmented contextual information and the unscreened local information. We recruited twelve participants and conducted an experiment to seek the best size, position, and opacity for the overview window through a Whac-A-Mole task (a touchscreen game). We found that the performance was better when the overview window was of medium size (FoV of 9.148∘ × 5.153∘, nearly one third of FoV of the used OST-HMD) and placed lower in the visual field. Either too large or too small a size decreases the performance. The performance increases with increased opacity. The obtained results can legitimate the default setting for the overview window.
KW - Augmented reality
KW - Computational glasses
KW - Computational ophthalmology
KW - Homonymous hemianopia
KW - Visual field defect
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U2 - 10.1016/j.cag.2020.04.001
DO - 10.1016/j.cag.2020.04.001
M3 - Article
AN - SCOPUS:85085185506
VL - 89
SP - 59
EP - 67
JO - Computers and Graphics
JF - Computers and Graphics
SN - 0097-8493
ER -