视网膜计预测老年性白内障术后视力评价

Evaluation of the retinometer examination for predicting senile cataract postoperative visual acuity

目的评价视网膜计测定值预测老年性白内障术后视力的效果。方法老年性白内障手术病人275例(眼)根据晶状体混浊程度参照晶状体混浊分类系统Ⅱ(lens opacities classification systemⅡ,LOCSⅡ)分组。A组31眼为皮质混浊CⅣ、CⅤ或核混浊NⅢ,其余244眼为B组。全部病例行超声乳化联合人工晶体植入术。术前用视网膜计测定术眼潜视力,术后1、3、30 d检查最佳矫正视力。所得数据做相关分析,用SAS软件包进行统计学分析。结果全部病例整体分析,术前视网膜计测定值与术后最佳矫正视力相关(P<0.01)。分组分析,A组术前视网膜计测定值与术后最佳矫正视力无明显相关(P>0.05),B组二者相关(P<0.01)。结论视网膜计测定值对老年性白内障病人的术后视力有一定的预测效果,对于成熟期和过熟期的老年性白内障病人应结合相关临床检查做综合评估。

Objective To evaluate the retinometer examination for predicting postoperative visual acuity（PPVA） in patients with senile cataract. Methods 275 patients （275 eyes） with senile cataract were divided into two groups according to the lens opacities classification system Ⅱ （LOCS Ⅱ ）. 31 patients with cortical opacification C IV, C V or nuclear opacification Nm were assigned to group A, others were in group B. All the patients underwent phacoemusification with posterior chamber lens implantation. Every patient was examined with a LAMBDA 100 retinometer to assess PPVA before surgery. Best corrected visual acuity （BCVA） was evaluated 1 d, 3 d and 1 month after surgery. Results There was a positive correlation between PPVA and BCVA in all patients （ r = 0. 2759, P 〈 0.01 ） and group B （ r = 0. 2337, P 〈 0. O1 ）. There was no correlation between PPVA and BCVA in group A （r = 0. 2156,P 〉 0. 05）. Conclusions The PPVA measured by the retinometer can accurately predict the BCVA after surgery in patients with senile cataract. As to the patients with mature or over mature senile cataract, more information was needed.