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生後1年以内に発症した乳児内斜視34例について,調節性要素に重点をおいて検討したところ,完全調節性が3例(8.8%),一部調節性が13.1列(38.2%),非調節性が16例(47.1%),手術後に調節性要素がみられたものが2例(5.9%)であり,全体の52.9%に調節性要素が関与していた。調節性要素が関与している症例の最低遠視度は,最小錯乱円で+1.5Dであった。乳児内斜視といえども,調節性要素が関与しているものは多くみられ,+1.5D以上の遠視がある場合,調節性要素の存在を考慮にいれ,十分に屈折矯正を行ったうえでの眼位観察が必要であると思われた。
We evaluated the accommodation in 34 cases of infantile esotropia. Three cases, 9%, were judged as fully accommodative, 13, 38%, were partially accommodative, 16, 47%, were nonaccommodative. Accommodative factor developed after surgery in 2, 6%. Infantile esotropia was thus associated with impaired accommodation in 53% in the present series. The minimum refractive error in the partially accommodative cases was +1.5 diopters when judged by the circle of least confusion. We recommend examination of eye positions under full correction whenever hypermetropia greater than +1.5 diopters is detected.
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