Visual Field Loss Compensation Using Edge Indicator

Visual Field Loss Compensation for Homonymous Hemianopia Patients Using Edge Indicator

Keisuke ICHINOSE, Xi ZHAO, Issei FUJISHIRO, Masahiro TOYOURA, Kenji KASHIWAGI, Kentaro GO, Xiaoyang MAO

Abstract

Homonymous hemianopia (HH) is one kind of visual field defect that the right or left half of the visual fields of both eyes are missing. HH is caused by damage to the neural pathways of the brain and a complete recovery is usually difficult. This study proposes a new information compensation method for HH patients using optical-see-through head mounted display. To avoid causing the occlusion, the proposed technique uses indicators placed at the boundary between the lost and remaining sides of visual field to notify patients about the changes in the lost side. Experiment involving simulated HH participants was conducted to verify the effectiveness of the proposed method and compare with the existing method using overlaid overview window. Objective and subjective evaluation results show that the proposed method can partially alleviate the occlusion problem of overlaid overview window approach and has lower physical and mental demand.

Links

  1. Publication：The Visual Computer, Springer Nature

Citation

Keisuke ICHINOSE, Xi ZHAO, Issei FUJISHIRO, Masahiro TOYOURA, Kenji KASHIWAGI, Kentaro GO, Xiaoyang MAO, “Enhancing Edge Indicator for Visual Field Loss Compensation for Homonymous Hemianopia Patients”, The Visual Computer, First online 2021-05-09.

Related research

  1. Keisuke ICHINOSE, Xi ZHAO, Issei FUJISHIRO, Masahiro TOYOURA, Kenji KASHIWAGI, Kentaro GO, Xiaoyang MAO, “Visual Field Loss Compensation for Homonymous Hemianopia Patients Using Edge Indicator,” Cyberworlds, pp. 79-85, 2020.
  2. Xi ZHAO, Issei FUJISHIRO, Kentaro GO, Masahiro TOYOURA, Kenji KASHIWAGI, Xiaoyang MAO, “Enhancing visual performance of hemianopia patients with overview window,” Computers & Graphics, vol. 89, pp. 59–67, 2020.
  3. Xi ZHAO, Kentaro GO, Kenji KASHIWAGI, Masahiro TOYOURA, Xiaoyang MAO, Issei FUJISHIRO, “Computational Alleviation of Homonymous Visual Field Defect with OST HMD: The effect of Size and Position of Overlaid Overview Window,” Cyberworlds, pp. 1-8, October 2019.

Acknowledgements

We thank the volunteers who took part in the experiments conducted in this study. This work is supported in part by the JSPS Grants-in-Aid for Scientific Research (Grant Nos. 20K20408 and 17H00738).