Developed a new method for testing visual acuity in infants using an eye-tracking device.

2023 Fiscal Year Final Research Report

• Project/Area Number: 19K18862
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 56060:Ophthalmology-related
• Research Institution: Kawasaki University of Medical Welfare
• Principal Investigator: Yoneda Tsuyoshi 川崎医療福祉大学, リハビリテーション学部, 准教授 (80389014)
• Project Period (FY): 2019-04-01 – 2024-03-31
• Keywords: 視線解析 / 他覚的視力検査 / 視線停留率 / 乳幼児

Outline of Final Research Achievements

In this study, we developed an automated visual acuity testing device using eye-tracking technology. When compared with Teller Acuity Cards (TAC), which are the standard for testing visual acuity in infants, the visual acuity values obtained with our newly developed automated device showed a significant correlation with those of TAC. In addition, a high correlation was also observed between traditional visual acuity measurements based on correct response rates and those calculated using gaze duration. This demonstrates that analysis of gaze duration allows accurate tracking of eye movements toward visual targets, facilitating accurate visual acuity assessments.
Using eye analysis technology, We has been able to develop an automated vision screening system that is more time-efficient and accurate than TAC.

Free Research Field

機能弱視

Academic Significance and Societal Importance of the Research Achievements

視線解析技術を用いた自動視力検査装置は、Teller acuity cardsを使用した従来の方法と比較して、検査時間が短縮されるとともに、検者間での視力評価のばらつきも大幅に減少することがわかった。この装置は、特に集中力が短い乳幼児において、視力の評価を正確かつ迅速に行うことが可能であると考えられた。本研究によって開発された自動視力検査装置は、乳幼児期の視力障害の早期発見に貢献することが期待できる。これにより、器質的疾患や機能弱視による視力障害を予防し、視環境の健康を促進するための重要なステップとなりえる。