Seitz B, Naumann G O
Augenklinik mit Poliklinik, Universität Erlangen-Nürnberg, Germany.
Ger J Ophthalmol. 1993 Feb;2(1):42-50.
From 1986 to 1991, among 980 penetrating keratoplasties, all 22 patients were studied retrospectively who had undergone 28 refractive procedures because of high corneal astigmatism after penetrating keratoplasty. In 8 procedures, only relaxing incisions were made, and in 20 procedures, additional compression sutures were placed at 90 degrees to the former. In 7 cases the relaxing incisions were located on the patient's peripheral cornea and in 21 cases, inside the graft margin. The absolute preoperative corneal astigmatism was 7.25-20.0 D (mean, 11.5 +/- 3.1 D). Immediately after surgery it was 0-14.0 D (mean, 7.0 +/- 3.6 D). The vector-corrected astigmatism immediately after surgery was 1.0-28.9 D (mean, 13.2 +/- 7.8 D). After a mean follow-up of 20.6 months, the mean residual astigmatism was 1.0 +/- 11.25 D (mean, 5.4-2.5 D). The mean postoperative vector-corrected astigmatism was 0-19.3 D (mean, 9.1 +/- 4.6 D). The best-corrected preoperative visual acuity was 0.12-0.9 (mean, 0.4), the best postoperative visual acuity was 0.3-1.2 (mean, 0.6). The approach described may reduce disturbing postkeratoplasty astigmatism--although the predictability remains unsatisfactory.
1986年至1991年期间，在980例穿透性角膜移植术中，对因穿透性角膜移植术后角膜散光过高而接受28次屈光手术的22例患者进行了回顾性研究。8例手术仅做了松解切口，20例手术在与松解切口呈90度方向额外放置了压迫缝线。7例松解切口位于患者周边角膜，21例位于植片边缘内。术前角膜绝对散光为7.25 - 20.0 D（平均11.5 +/- 3.1 D）。术后即刻为0 - 14.0 D（平均7.0 +/- 3.6 D）。术后即刻矢量校正散光为1.0 - 28.9 D（平均13.2 +/- 7.8 D）。平均随访20.6个月后，平均残余散光为1.0 +/- 11.25 D（平均5.4 - 2.5 D）。术后平均矢量校正散光为0 - 19.3 D（平均9.1 +/- 4.6 D）。术前最佳矫正视力为0.12 - 0.9（平均0.4），术后最佳视力为0.3 - 1.2（平均0.6）。所描述的方法可能会减少穿透性角膜移植术后令人困扰的散光——尽管可预测性仍不尽人意。
