トーリック眼内レンズの早期術後成績

Early outcome after insertion of toric intraocular lens

要約　目的：乱視眼に対するトーリック眼内レンズ（IOL）挿入1か月後の結果の報告。対象と方法：白内障のある40例50眼を対象とした。同一術者が水晶体再建術を行い，TECNIS^® Toric IOLを挿入した。術前の角膜乱視と，術後1か月までの屈折と視力を測定した。結果：術中または術後の合併症はなかった。logMARとしての矯正視力は，術前の平均0.34が，1か月後の平均−0.07に有意に改善した（p＜0.01）。術1か月後の小数視力は，0.6以上が92％，0.8以上が76％であった。術前の角膜乱視は平均1.27±0.46Dで，1か月後の乱視は0.45±0.27Dであった。術前の直乱視は過矯正，倒乱視は低矯正になる傾向があった。結論：トーリックIOLの挿入により，乱視矯正効果と良好な術後裸眼視力が得られた。

Abstract.　Purpose：To report the outcome after insertion of toric intraocular lens（IOL）up to one month of surgery. Cases and Method：This study was made on 50 eyes of 40 patients with cataract. They received surgery by one surgeon and were inserted with TECNIS^® Toric IOL. They were evaluated regarding astigmatism before surgery, refraction and visual acuity up to one month after surgery. Results：There was no complication during or after surgery throughout. Corrected visual acuity, when expressed as logMAR, averaged 0.34 before surgery and 0.07 one month after surgery. The difference was significant（p＜0.01）. When expressed as decimal visual acuity, 92％ of eyes had 0.6 or over and 76％ had 0.8 or over. Corneal astigmatism averaged 1.27±0.46 diopter before surgery. Total astigmatism one month after surgery averaged 0.45±0.27 diopter. With-the-rule astigmatism before surgery tended to be over-corrected after surgery. Against-the-rule astigmatism tended to be undercorrected. Conclusion：Insertion of toric IOL was followed by correction of astigmatism and by improved visual acuity without correction.