鈴木式アイチェックチャートによる緑内障性視野異常の自己検出

Subjective detection of glaucomatous visual field defect using Suzuki's eye-check chart

　鈴木式アイチェックチャートは，視野異常の有無を自分で簡単に検出できる視野検査表である。正常者75例75眼と，ハンフリー視野計プログラム30-2で視野異常が確認された緑内障患者137例137眼について，本チャートの視野異常検出能力を検討した。感度は53.5％，特異度は84％であった。緑内障眼での異常検出率は病期の進行に伴って増加した。病期をAulhorn分類Greve変法で分類するとき，異常検出率は0期7.1％，1期38.1％，2期53.3％，3期70.0％，4期78.6％，5期85.3％であった。高度の視野障害がある2眼は，再検査でも異常を自覚しなかった。

　Suzuki's eye-check chart is a simple screening device to subjectively detect field defects. Its usefulness was evaluated in 75 eyes of 75 normal persons and 137 of 137 patients with glaucomatous field defect as shown by central 30-2 program of Humphrey Field Analyzer. The sensitivity was 53.3％ and its specificity was 84％. The sensitivity increased along with advance of glaucomatous field defect. According to Aulhorn's classification modified by Greve,it was 7.1％ in stage 0,38.1％in stage 1,53.3％ in stage 2,70.0％ in stage 3,78.6％ in stage 4 and 85.3％ in stage 5. Two eyes with advanced visual field defect failed to notice abnormalities even after repeated examinations.