Lyhne N, Hansen T E, Corydon L
Department of Ophthalmology, Odense Hospital, Denmark.
J Cataract Refract Surg. 1998 Jul;24(7):935-9. doi: 10.1016/s0886-3350(98)80046-1.
To evaluate the effect of the preoperative axis of astigmatism on the outcome of corneal astigmatism after sutured 5.2 to 5.7 mm superior incision phacoemulsification.
Departments of Opthalmology, Odense and Vejle Hospitals, Denmark.
Seventy-three consecutive patients with preoperative corneal astigmatism of 2.0 diopters (D) or less, axial length between 20.0 and 25.5 mm, and no eye disease except cataract were grouped according to preoperative with-the-rule (WTR) or against-the-rule (ATR) astigmatism. The keratometric cylinder, induced keratometric cylinder (subtraction), and induced cylinder (Jaffe) were measured and calculated 10 to 12 months postoperatively.
The postoperative keratometric cylinder and induced keratometric cylinder were significantly higher in the ATR group (P < .00001; mean difference [95% confidence limits]: 0.76 D [0.54; 0.98] and 0.69 D [0.46; 0.92], respectively). There was no significant difference between groups in induced cylinder (Jaffe).
The estimated differences were significantly in favor of patients with preoperative WTR astigmatism. The findings support using temporal incision in cases with a preoperative ATR axis of astigmatism.
评估术前散光轴对5.2至5.7毫米上方缝合切口白内障超声乳化术后角膜散光结果的影响。
丹麦欧登塞医院和维杰勒医院眼科。
73例术前角膜散光2.0屈光度（D）或更低、眼轴长度在20.0至25.5毫米之间且除白内障外无其他眼病的连续患者，根据术前顺规散光（WTR）或逆规散光（ATR）进行分组。术后10至12个月测量并计算角膜曲率计圆柱镜度数、诱导角膜曲率计圆柱镜度数（差值）和诱导圆柱镜度数（Jaffe法）。
ATR组术后角膜曲率计圆柱镜度数和诱导角膜曲率计圆柱镜度数显著更高（P <.00001；平均差值[95%置信区间]：分别为0.76 D [0.54；0.98]和0.69 D [0.46；0.92]）。两组间诱导圆柱镜度数（Jaffe法）无显著差异。
估计差异显著有利于术前WTR散光患者。这些发现支持在术前散光轴为ATR的病例中采用颞侧切口。
