Development of a new visual field self-checking tool using a tablet device

2023 Fiscal Year Final Research Report

• Project/Area Number: 20K09817
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 56060:Ophthalmology-related
• Research Institution: Kindai University
• Principal Investigator: Matsumoto Chota 近畿大学, 医学部, 教授 (70229558)
• Co-Investigator(Kenkyū-buntansha): 野本 裕貴 近畿大学, 医学部, 講師 (50596806) ; 萱澤 朋泰 近畿大学, 医学部, 助教 (90550799)
• Project Period (FY): 2020-04-01 – 2024-03-31
• Keywords: 視野 / 緑内障 / スクリーニング / タブレット

Outline of Final Research Achievements

Glaucoma is the leading cause of blindness in Japan, with a prevalence of more than 5% of those over 40 years of age. Early diagnosis and treatment are the key to management, as recovering from visual field damage is difficult. Glaucomatous visual field defects are not well recognized, and about 90% of patients with glaucoma are latent. Treatment adherence is also an issue. We developed a visual field self-checking tool using a tablet device that simultaneously presents 1-3 optotypes to identify abnormal areas and 4 test optotypes, one for each of the 4 quadrants, to promote awareness of abnormalities in the visual field. The sensitivity and specificity of the test were 94% and 94%, respectively, in 41 glaucoma patients. Furthermore, the number of patients unaware of visual field abnormality decreased from 49% to 26.7% using the 4-point simultaneous stimulation method.

Free Research Field

視野、緑内障

Academic Significance and Societal Importance of the Research Achievements

緑内障は社会的失明原因の第一位であり自覚症状に乏しく潜在患者が約90%にものぼる。我々は、従来の高額な医療機器の視野計を用いず、安価で簡便なタブレット端末にて緑内障性視野異常を短時間に効率的に検出する手法を開発した。４点同時刺激法により普段は無自覚の視野異常を患者自身に確実に自覚させる新しい手法を開発した。本装置をスクリーニング現場、診療現場で用いることにより、効率的な緑内障の視野スクリーニングのみならず、緑内障治療へのアドヒアランス向上に寄与すると考えれる。