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上斜筋麻痺71例について,術前術後にシノプトメータで49方向のむき眼位における上下偏位を測定し,術量—矯正効果を検討した。これをもとに,術前の上下偏位のパターンを用いて,6種類の手術を行った場合に期待される矯正効果をシミュレーションし,最適の術式,術量を判定するコンピュータ・プログラム(SOCALC)を試作した。第1眼位におけるプログラムの予測精度(σ)は,斜筋手術で約2〜3°,直筋手術で約1〜2°と期待される。
We analyzed the surgical dose-response relation-ship in 71 cases of unilateral superior oblique muscle palsy. Each case was evaluated regarding 49 cardinal gaze positions within 30 degrees from the fixatign point using a synoptometer. These data served as basis for developing an empirical com-puter program, SOCALC. This program cound sim-ulate the results for six types of surgery and pro-pose the optimum surgical method and dosis for each case from preoperative ocular deviations at 49 gaze positions. The accuracy of its prediction in the primary position was estimated to be within a standard deviation of 3 degrees for oblique muscle surgeries and 1 to 2 degrees for rectus muscle surgeries.
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