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Enhancing edge indicator for visual field loss compensation for homonymous hemianopia patients

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Abstract

Homonymous hemianopia (HH) is a visual field defect in which the same side of both eyes is blind. In this paper, we propose an out-of-visual-field information compensation system for HH patients using an optical see-through head-mounted display. In the proposed system, in order to reduce the obstruction in the remaining visual field, indicators are placed at the boundary between the remaining visual field and the defective part to notify the HH patient about the events occurring at the blinded side of the visual field. Two different kinds of indicators, namely brightness-based and flicker-based, are designed to visualize the spatial information of the events. We conducted experiments with simulated HH participants to verify the effectiveness of the proposed system and compare the two designed indicators, as well as an existing method that makes use of the overlay overview window. The experimental results proved that the proposed system can react more intuitively and is faster than the existing method in the part near the central visual field. Moreover, it can alleviate the obstruction problem of the existing method.

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Acknowledgements

We thank the volunteers who took part in the experiments conducted in this study.

Funding

This work is supported by the JSPS Grants-in-Aid for Scientific Research (Grant Nos. 17H00738 and 20K20408).

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Authors and Affiliations

  1. Graduate School of Engineering, University of Yamanashi, Kofu, 400-8511, Japan

    Keisuke Ichinose

  2. Center for Information and Computer Science, Keio University, Yokohama, 223-8522, Japan

    Xi Zhao

  3. Department of Information and Computer Science, Keio University, Yokohama, 223-8522, Japan

    Issei Fujishiro

  4. Department of Computer Science and Engineering, University of Yamanashi, Kofu, 400-8511, Japan

    Masahiro Toyoura, Kentaro Go & Xiaoyang Mao

  5. Department of Ophthalmology, University of Yamanashi, Chuo, 409-3898, Japan

    Kenji Kashiwagi

  6. School of Computer Science, Hangzhou Dianzi University, 1156 2nd Street, Hangzhou, 310018, China

    Issei Fujishiro & Xiaoyang Mao

Authors
  1. Keisuke Ichinose
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  2. Xi Zhao
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  3. Issei Fujishiro
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  4. Masahiro Toyoura
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  5. Kenji Kashiwagi
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  6. Kentaro Go
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  7. Xiaoyang Mao
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Correspondence to Xiaoyang Mao.

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Ichinose, K., Zhao, X., Fujishiro, I. et al. Enhancing edge indicator for visual field loss compensation for homonymous hemianopia patients. Vis Comput 38, 1263–1273 (2022). https://doi.org/10.1007/s00371-021-02156-9

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