三焦点与单焦点人工晶状体植入术效果的比较

目的：观察并比较AT LISA tri 839MP三焦点人工晶状体及CT SPHERIS 209M单焦点人工晶状体植入术后白内障患者的视力、对比敏感度和视觉质量。

方法：行白内障超声乳化摘除联合人工晶状体植入术的患者52例52眼，其中三焦点组26例26眼，术中植入AT LISA tri 839MP三焦点人工晶状体； 单焦点组26例26眼，术中植入CT SPHERIS 209M单焦点人工晶状体。术后3mo检查患者的裸眼远距离视力(UCDVA)、裸眼中距离视力(UCIVA)、裸眼近距离视力(UCNVA)、最佳矫正远视力(BCDVA)、远视力矫正下的中距离视力(DCIVA)、远视力矫正下的近距离视力(DCNVA)，明、暗环境中不同空间频率(3、6、12、18c/d)下的对比敏感度，并进行脱镜率、不良视觉症状和满意度等问卷调查。

结果：术后3mo三焦点组UCIVA、UCNVA、DCIVA和DCNVA、脱镜率及满意度均优于单焦点组(P<0.05)。在暗环境中的18c/d空间频率，单焦点组的对比敏感度优于三焦点组(P=0.041)。两组均有轻度眩光和光晕不适主诉(P=0.668)。

结论：AT LISA tri 839MP三焦点人工晶状体较CT SPHERIS 209M单焦点人工晶状体为患者提供了更好的中、近视力，脱镜率和满意度均高于单焦点人工晶状体。

Comparison of the visual performance of multifocal intraocular lens and monofocal intraocular lens

AIM: To compare the visual acuity, contrast sensitivity and visual quality of cataract patients after the implantation of AT LISA tri 839MP multifocal intraocular lenses and CT SPHERIS 209M monofocal intraocular lenses.

METHODS: Fifty-two patients(52 eyes)were involved and divided into two groups in the study. The trail group(26 patients, 26 eyes)received AT LISA tri 839MP multifocal intraocular lens implantation and the control group(26 patients, 26 eyes)received CT SPHERIS 209M monofocal intraocular lens implantation after phacoemulsification. Visual acuity, contrast sensivity at different spatial frequencies(3, 6, 12, 18c/d)in bright and dark circumstances and patient satisfaction questionnaire were monitored at 3mo postoperatively. The postoperative visual acuity included the information of uncorrected distance visual acuity(UCDVA), uncorrected intermediate visual acuity(UCIVA), best corrected distance visual acuity(BCDVA), distance corrected intermediate visual acuity(DCIVA)and distance corrected near visual acuity(DCNVA).

RESULTS: The UCIVA, UCNVA, DCIVA, DCNVA, independent spectacles ratio and satisfaction of the trail group were better than those of the control group 3mo postoper atire(P<0.05). Mean contrast sensitivity at the spatial frequency of 18c/d in dark circumstances of the control group was higher than that of the trail group(P=0.041). The incidence of glare and halo showed no significantly statistical difference between the two groups(P=0.668).

CONCLUSION: AT LISA tri 839MP multifocal intraocular lens provided better intermediate and near visual acuity, independent spectacles ratio and satisfaction compared with CT SPHERIS 209M monofocal intraocular lens.