AcrySof Toric人工晶状体的临床应用研究

Clinical study of AcrySof Toric intraocular lens implantation

摘要:

目的：评价ArySof Toric人工晶状体矫正白内障患者角膜散光的效果及囊袋内的稳定性。

方法：观察解放军474医院眼科中心行超声乳化白内障吸除联合Toric IOL植入的白内障合并角膜散光>1.00D的患者72例86眼，分别于术前、术后1d； 1wk； 1，3mo测量裸眼视力、最佳矫正视力、残余散光及IOL的轴位。

结果：术后3mo ，92%患者裸眼视力≥0.5，78%患者裸眼视力≥0.8，95%患者最佳矫正视力≥0.8。术后3mo角膜散光由术前的2.25±0.43D降至0.42±0.32D，与术前比较差异有统计学意义(t=2.880，P<0.01)，与术前预期残余散光0.45±0.39D比较差异无统计学意义(t=1.752，P>0.05)。术后1wk人工晶状体平均旋转度为(3.15±1.05)°，术后1mo(3.3±1.5)°，术后3mo(3.55±1.75)°，术后1wk与术后1，3mo比较，差异无统计学意义(P>0.05)，术后3mo 95.3% IOL平均旋转度<5°，100%旋转度<10°。

结论：Toric IOL能有效地矫正角膜散光，具有良好的旋转稳定性和预测性，治疗白内障合并规则角膜散光安全有效。

Abstract:

AIM: To evaluate the clinical effect and the rotational stability of AcrySof Toric intraocular lens(IOL).

METHODS:Eighty-six eyes of 72 subjects were enrolled from No.474 Hospital of Chinese PLA, Center of Ophthalmology of Chinese PLA. The preoperative corneal astigmatism was more than 1.00 diopter(D)for all eyes.All patients underwent similar phacoemulsification combined with Toric IOLs implantation.The uncorrected visual acuity(UCVA), best-corrected visual acuity(BCVA), preoperative corneal astigmatism, anticipated residual astigmatism, postoperative residual astigmatism and Toric lens axis were detected and measured. The postoperative IOL position was assessed at 1 day, 1 week, 1 month and 3 months using a specially designed angle measuring eyepiece under the slit-lamp.

RESULTS: Three months following surgery, 92% of eyes showed 0.5 or better in UCVA.78% of eyes was 0.8 or better in UCVA and 95% of eyes achieved 0.8 or better in BCVA. The mean preoperative corneal astigmatism was 2.25±0.43D and the postoperative refractive cylinder was 0.42±0.32D, indicating a significant decrease in refractive cylinder after surgery(t=2.880, P<0.01). And there was no statistical significance(t=1.752, P>0.05)with anticipated residual cylinder 0.45±0.39D. The mean rotation of Toric IOLs was 3.15±1.05 degrees after operation 1 week, 3.3±1.5 degrees after 1 month, and 3.55±1.75 degrees after 3 months, there was no significant difference among three groups(F=2.26, P>0.05), and the mean rotation was within 5 degrees in 95.3% of eyes, 100% of eyes rotated less than 10 degrees.

CONCLUSION: The Toric IOL showed good rotational stability and predictability in the correction of corneal astigmatism. Implantation of AcrySof Toric IOL is an effective option for the correcting of preexisting corneal astigmatism in cataract surgery.