Alió J L, Ismail M M
Division of Ophthalmology, University of Alicante, Spain.
J Cataract Refract Surg. 1994 Jan;20(1):13-7. doi: 10.1016/s0886-3350(13)80037-5.
Astigmatic overcorrection is a significant possible complication of refractive surgical procedures such as radial keratotomy, astigmatic keratotomy, and combined radial and astigmatic keratotomy. We present the results of a study in which astigmatic overcorrection was reversed by suturing the astigmatic incisions. Videokeratoscopic studies of 15 patients showed that this technique induced a wide range of central corneal steepness, thus correcting variable amounts of astigmatic overcorrection. Mean preoperative uncorrected visual acuity was 20/100 while the mean postoperative uncorrected visual acuity was 20/40. One year after surgery, 13 patients had gained two or more Snellen lines of uncorrected vision; the remaining two had no improvement. Refraction was stable in all cases. No significant complications were observed at one year postoperatively. Corneal sutures may be used safely to manage overcorrections after astigmatic keratotomy or combined radial and astigmatic keratotomy with satisfactory results, even though the predictive value of the technique is limited.
散光过矫是放射状角膜切开术、散光性角膜切开术以及联合放射状和散光性角膜切开术等屈光手术的一种重要潜在并发症。我们展示了一项通过缝合散光切口来矫正散光过矫的研究结果。对15例患者的角膜地形图研究表明，该技术可诱导中央角膜陡峭度发生广泛变化，从而矫正不同程度的散光过矫。术前平均未矫正视力为20/100，而术后平均未矫正视力为20/40。术后一年，13例患者的未矫正视力提高了两行或更多Snellen视力表行数；其余2例无改善。所有病例的屈光状态均稳定。术后一年未观察到明显并发症。角膜缝线可安全用于处理散光性角膜切开术或联合放射状和散光性角膜切开术后的过矫，即使该技术的预测价值有限，结果也令人满意。
