双眼植入多焦和单焦人工晶状体后视力及立体视比较研究

目的 比较双眼植入ReSTOR+3D非球面多焦点人工晶状体(MIOL)与传统球面单焦点人工晶状体(SIOL)后全程视力和立体视觉情况.方法 前瞻性临床研究.对2009年5月至2010年6月在上海公利医院眼科治疗的病人18例(36只眼)植入ReSTOR+3DMIOL(SN6ADI),20例(40只眼)植入传统球面SIOL(SNt0AT).以术后第二眼为标准随访3个月.测两组的远、中、近视力及近立体视锐度,进行相应统计学分析.结果 术后裸眼及最佳远、近矫正视力两组无明显差异(t值分别为1.14、1.74、0.99,P＞0.05),在25cm、30cm、33cm、40cm、50cm、60cm、70cm近中距离上,MIOL组远视力矫正下近视力均优于SIOL组(t值分别为14.02、20.28、24.52、32.74、21.91、11.66、9.76,P＜0.01).MIOL组裸眼近立体视锐度优于SIOL组(P＜0.05).双眼矫正近视力后,两组的立体视觉差异无统计学意义(X2=64.97 P＞0.05).结论 ReSTOR+3D多焦点IOL较单焦点IOL可提供更好的近、中视力和裸眼近立体锐度,实现了很高地脱镜率,良好地全程视力使其拥有广泛的应用价值.

Abstract：

Objective To compare visual acuity from far to near and stereoscopic vision in patients who underwent bilateral implantation of aspheric diffractive multifocal intraocular lens (IOLs)with monofocal IOLs. Methods This prospective study comprised patients having implantation of an aspheric diffractive multifocal ReSTOR SN6AD1 IOL with a C3.0 D add (SN6AD1) or a monofocal IOL (SN60AT). Visual acuity from far to near distances and stereoscopic vision were evaluated 3months postoperatively. Results Multifocal IOL group comprised 36 eyes of 18 patients. Monofocal IOL group comprised 40 eyes of 20 patients. The differences between groups of uncorrected and corrected distance visual acuity and corrected near visual acuity had not statistically significant (P＞0.05).The mean distance-corrected visual acuity at 25 cm, 30 cm, 33 cm, 40 cm, 50 cm, 60 cm, 70 cm were better in the multifocal group than in the monofocal group (P＜0.01). The near stereoscopic vision. in the multifocal group were better than in the monofocal group (P＜0.01). When near corrected,there were no significant difference between the stereoscopic vision for the multifocal and monofocal groups (P＞0.05). Conclusions The diffractive multifocal IOL with a low add power provides significantly better intermediate, near visual acuity than the monofocal IOL. When near uncorrected, the multifocal group has better stereoscopic vision. Spectacle independence is higher with the multifocal intraocular lens.

Visual acuity from far to near and stereoscopic vision in eyes that underwent bilateral implantation of multifocal or monofocal intraocular lens after phacoemulsification

Objective To compare visual acuity from far to near and stereoscopic vision in patients who underwent bilateral implantation of aspheric diffractive multifocal intraocular lens (IOLs)with monofocal IOLs. Methods This prospective study comprised patients having implantation of an aspheric diffractive multifocal ReSTOR SN6AD1 IOL with a C3.0 D add (SN6AD1) or a monofocal IOL (SN60AT). Visual acuity from far to near distances and stereoscopic vision were evaluated 3months postoperatively. Results Multifocal IOL group comprised 36 eyes of 18 patients. Monofocal IOL group comprised 40 eyes of 20 patients. The differences between groups of uncorrected and corrected distance visual acuity and corrected near visual acuity had not statistically significant (P＞0.05).The mean distance-corrected visual acuity at 25 cm, 30 cm, 33 cm, 40 cm, 50 cm, 60 cm, 70 cm were better in the multifocal group than in the monofocal group (P＜0.01). The near stereoscopic vision. in the multifocal group were better than in the monofocal group (P＜0.01). When near corrected,there were no significant difference between the stereoscopic vision for the multifocal and monofocal groups (P＞0.05). Conclusions The diffractive multifocal IOL with a low add power provides significantly better intermediate, near visual acuity than the monofocal IOL. When near uncorrected, the multifocal group has better stereoscopic vision. Spectacle independence is higher with the multifocal intraocular lens.