Lyhne N, Corydon L
Department of Opthalmology, Vejle Hospital, Denmark.
J Cataract Refract Surg. 1996 Nov;22(9):1206-10. doi: 10.1016/s0886-3350(96)80069-1.
To evaluate changes in astigmatism in the first 6 months after 5.2 mm superior scleral incision phacoemulsification using three different closures.
Department of Ophthalmology, Vejle Hospital, Denmark.
This study comprised 75 consecutive patients who had 5.2 mm superior scleral incision phacoemulsification. Patients were randomly assigned to one of three groups based on type of incision closure: Group 1, one intraoperatively adjusted cross suture; Group 2, one unadjusted cross suture; Group 3, no suture. Inclusion criteria were preoperative astigmatism of 2.00 diopters (D) or less (range of median 0.74 to 0.81 D) and no eye disease except cataract. Postoperative astigmatism was evaluated by keratometric cylinder, induced astigmatism (Naeser), and induced cylinder (Jaffe) on the first day and after 1 week and 1, 3, and 6 months. Time before stability was estimated.
All groups had the same level of postoperative keratometric cylinder with no significant change between 1 week and 6 months (range of median 0.81 to 1.06 D). The groups reached the same level of induced astigmatism (Naeser) 3 to 6 months after surgery (range of median -0.44 to -0.64 D). Group 3 (sutureless) reached that value after 1 week, and induced astigmatism was stable thereafter. Both sutured groups (Groups 1 and 2) had a highly significant change between the first week and third month (P < .01). There were no significant intergroup differences in induced cylinder (Jaffe), which stabilized after 1 week in Groups 1 and 2 and after 1 month in Group 3 (range of median 0.61 to 0.87 D). During the early postoperative period, variation was highest in Group 2.
Keratometric cylinder, induced astigmatism, and induced cylinder 3 to 6 months postoperatively were similar among the three groups, but early stability was only seen in the sutureless group. If a suture is used, intraoperative adjustment seems to result in lower variations in the early postoperative period.
评估采用三种不同缝合方式的5.2毫米巩膜上切口白内障超声乳化术后前6个月散光的变化情况。
丹麦瓦埃勒医院眼科。
本研究纳入75例连续接受5.2毫米巩膜上切口白内障超声乳化术的患者。根据切口缝合类型，患者被随机分为三组：第1组，术中调整的十字缝线；第2组，未调整的十字缝线；第3组，不缝合。纳入标准为术前散光2.00屈光度（D）或更低（中位数范围为0.74至0.81 D）且除白内障外无眼部疾病。术后第1天、1周、1个月、3个月和6个月通过角膜曲率计测量柱镜度数、诱导散光（内泽尔法）和诱导柱镜度数（贾菲法）评估术后散光情况。估计达到稳定状态所需的时间。
所有组术后角膜曲率计测量的柱镜度数水平相同，1周与6个月之间无显著变化（中位数范围为0.81至1.06 D）。术后3至6个月，三组诱导散光（内泽尔法）达到相同水平（中位数范围为-0.44至-0.64 D）。第3组（不缝合组）术后1周即达到该值，此后诱导散光保持稳定。两个缝合组（第1组和第2组）在第1周与第3个月之间有高度显著变化（P < 0.01）。诱导柱镜度数（贾菲法）组间无显著差异，第1组和第2组术后1周稳定，第3组术后1个月稳定（中位数范围为0.61至0.87 D）。术后早期，第2组的变化最大。
术后3至6个月，三组的角膜曲率计测量柱镜度数、诱导散光和诱导柱镜度数相似，但仅不缝合组早期达到稳定。如果使用缝线，术中调整似乎可降低术后早期的变化。
