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[摘要]
目的:评价AcrySof Toric IOL在囊袋内的稳定性及矫正角膜散光的效果。
方法:选择2010-04/2012-04在我院接受白内障超声乳化及AcrySof Toric IOL植入并且完成6mo随访的患者20例23眼。观察术前、术后裸眼视力(UCVA)、术前角膜散光、术后残余散光、IOL旋转度、晶状体偏中心情况、晶状体倾斜情况及囊袋情况。
结果:术后6mo,100%患眼UCVA≥0.6,69.6%(16/23)患眼UCVA≥0.8。术前角膜散光平均为2.31±0.70D,术后6mo残余散光为0.45±0.30D,二者差异有统计学意义(t=15.045,P=0.000)。术后6mo时17眼(73.9%)偏离预定轴位,平均偏差5.36°±0.32°,其中2例偏差>10°,最大偏差15°; 术后6mo时12眼(52.2%)出现晶状体偏中心,8眼(34.8%)<0.5mm,3眼(13.0%)为≥0.5mm而≤1mm,1眼(4.3%)>1mm; 术后6mo时20眼(87.0%)晶状体无倾斜,3眼(13.0%)出现倾斜,倾斜均少于5°。
结论:AcrySof Toric IOL可使患者获得良好的裸眼远视力,有效的矫正患者的角膜散光,同时具有良好的位置稳定性,预测性强,是一种有效的矫正角膜规则散光的治疗方法。
[Key word]
[Abstract]
AIM: To evaluate the corneal astigmatism correction effect and positional stability of AcrySof Toric intraocular lens(IOL)after cataract surgery.
METHODS: Totally 20 patients 23 eyes were implanted with the AcrySof Toric IOL between April 2010 and April 2012. All the patients were followed up for 6 months. The pre and post-operative uncorrected visual acuity(UCVA), preoperative corneal astigmatism, postoperative residual astigmatism, Toric lens axis, Toric lens decentration, Toric lens tilt and the capsule were detected and measured.
RESULTS: After 6 months, UCVA was ≥0.6 in 100% of eyes; ≥0.8 in 69.6% of eyes. The mean preoperative corneal astigmatism was 2.31±0.70D and the postoperative residual astigmatism was 0.45±0.30D, indicating a significant decrease in refractive cylinder after surgery(t=15.045, P=0.000). The mean rotation of Toric IOLs was 5.36°±0.32°. After 6 months, IOL centricity was in 12 eyes(52.2%)in which 8 eyes(34.8%)<0.5mm, 1mm>3 eyes(13.0%)≥ 0.5mm,1 eye(4.3%)>1mm. 20 eyes(87.0%)was untilt while 3 eyes(13.0%)was tilt and less than 5°,
CONCLUSION: Even in different orientation,AcrySof Toric IOL still has good position stability. It is an effective and predicted method for the correct of corneal astigmatism in cataract surgery.
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