Development of novel method for eye movements and validation of the training effect in the children with developmental dyslexia

2023 Fiscal Year Final Research Report

• Project/Area Number: 19K21783
• Research Category: Grant-in-Aid for Challenging Research (Exploratory)
• Allocation Type: Multi-year Fund
• Review Section: Medium-sized Section 9:Education and related fields
• Research Institution: Teikyo University
• Principal Investigator: Ikeda Yuka 帝京大学, 医療技術学部, 教授 (00439598)
• Co-Investigator(Kenkyū-buntansha): 百瀬 桂子 早稲田大学, 人間科学学術院, 准教授 (60247210) ; 松岡 久美子 帝京大学, 医療技術学部, 教授 (90439597) ; 広田 雅和 帝京大学, 医療技術学部, 講師 (40835435)
• Project Period (FY): 2019-06-28 – 2024-03-31
• Keywords: 読み書き困難 / 眼球運動 / 視覚認知機能 / 視線計測

Outline of Final Research Achievements

In this study, we examined the relationship between eye movement accuracy and symptoms of reading difficulties, visual function, and visual cognitive function. Saccadic eye movements, which play an important role in reading, were abnormal in more than 60% of children with reading difficulties in both horizontal and vertical directions in the NSUCO eye movement test. The results of gaze measurement of smooth pursuit movements did not show a consistent correlation with NSUCO, the WAVES visual cognitive function test, or subjective symptoms. It is necessary to review the equipment and improve the measurement method, and to increase the number of cases for further study. The results of the WAVES suggested a correlation between eye movement accuracy and symptoms of reading difficulties.

Free Research Field

眼科学

Academic Significance and Societal Importance of the Research Achievements

小児科LD（学習障害）外来と眼科外来の連携を推進し、読み困難児の視機能、眼球運動の正確性、視覚認知機能の検査および自覚症状の調査を行った。その結果、眼球運動、視覚認知機能、自覚症状の関連を示唆する結果が得られた。また、読み困難児の眼科受診を推進することで、屈折異常・眼位異常・色覚異常等の視機能異常や前眼部疾患等の発見に繋がった。
VOGを用いた眼球運動の計測は、有効なデータの取得が困難であったため、今後も装置の見直しや測定方法の改善を行い、症例数を増やして検討する予定である。