Shepherd J R
Sunrise Medical Center, Las Vegas, Nevada 89109.
J Cataract Refract Surg. 1989 Jan;15(1):85-8. doi: 10.1016/s0886-3350(89)80145-2.
The use of smaller cataract incisions is thought to induce less astigmatism, resulting in a more stable refraction. I analyzed the astigmatic changes in 99 cataract/intraocular lens patients with 4.0 mm incisions. Preoperative keratometry measurements were compared with those obtained one week, one month, and three months postoperatively. These changes, analyzed by vector analysis, revealed 0.13 D of induced with-the-rule astigmatism at one week, degrading to 0.22 D of against-the-rule at three months. This compares favorably with previously reported results of 6.0 mm and 10.0 mm incisions. This low amount of induced cylinder and rapid stabilization of the wound confirms an advantage of small incision surgery.
人们认为使用较小的白内障切口可减少散光，从而获得更稳定的屈光状态。我分析了99例采用4.0毫米切口的白内障/人工晶状体患者的散光变化。将术前角膜曲率测量值与术后一周、一个月和三个月时获得的测量值进行比较。通过矢量分析对这些变化进行分析，结果显示术后一周有0.13 D的顺规散光，到三个月时逆规散光增至0.22 D。与先前报道的6.0毫米和10.0毫米切口的结果相比，这一结果较为理想。这种较低的散光度数以及伤口的快速稳定证实了小切口手术的优势。
