An analyses of characteristics of fixational eye movements in amblyopia

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  • KANOH Yuji
    Faculty of Biology-Oriented Science and Technology, Kinki University
  • NAKAI Yuma
    Faculty of Biology-Oriented Science and Technology, Kinki University
  • OHTANI Shohei
    Faculty of Biology-Oriented Science and Technology, Kinki University
  • TANAKA Hiroko
    Department of Ophthalmology, Wakayama Medical University
  • SHIRAI Kumi
    Department of Ophthalmology, Wakayama Medical University
  • KOHAMA Takeshi
    Faculty of Biology-Oriented Science and Technology, Kinki University
  • SAIKA Shizuya
    Department of Ophthalmology, Wakayama Medical University
  • YOSHIDA Hisashi
    Faculty of Biology-Oriented Science and Technology, Kinki University

Bibliographic Information

Other Title
  • 弱視者の固視微動に見られる特徴の解析(視聴覚技術,ヒューマンインタフェースおよび一般)
  • 弱視者の固視微動に見られる特徴の解析
  • ジャクシシャ ノ コシ ビドウ ニ ミラレル トクチョウ ノ カイセキ

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Description

It is known that amblyopia could be improved by sight training such as visual attention concentration tasks. However, the effectiveness of sight training could not evaluate objectively because amblyopia is not fully understood so far. Since visual attention influences on fixation eye movements, which are involuntary miniature movements of the eye, there is a possibility that the properties of fixation eye movements would change by sight training. In order to investigate the characteristics of fixation eye movements of amblyopic eye, we carried out an experiment which maintain visual fixation during focal attention tasks. The results of analyses of fixation eye movements suggest that microsaccade rate and microsaccade amplitude are both higher than those of normal eyes. Moreover, frequency analysis of drift eye movements indicate that the amplitude of fluctuation in low frequency component of amblyopic eyes is larger than that of normal eyes.

Journal

  • ITE Technical Report

    ITE Technical Report 40.9 (0), 9-12, 2016

    The Institute of Image Information and Television Engineers

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