【In Press】 Comparison of visual outcomes with implantation of trifocal versus bifocal intraocular lens after phacoemulsification: a Meta-analysis

AIM: To compare a trifocal intraocular lens (IOL) and a bifocal IOL implantation in improving visual function after cataract surgery. METHODS: Eligible literatures were systematically searched through EMBSE and PubMed databases. The inclusion criteria were prospective comparative clinical trials on cataract surgery comparing trifocal IOL with bifocal IOL implantation that assessed visual acuity, contrast sensitivity and subjective vision quality. The effects were computed as standardized mean differences and pooled using fixed-effect or random-effect models. RESULTS: Four prospective randomized controlled trials (RCTs) and five cohorts provided data and were included by a systematic review, comprising 265 eyes implanted with trifocal IOLs and 264 eyes implanted with bifocal IOLs. Monocular distance visual acuity (VA) showed a statistically significant but small difference that favored trifocal IOLs (MD=-0.06; 95%CI, -0.10 to -0.02; Z=2.90, P=0.004 for UDVA and MD=-0.02; 95%CI, -0.03 to -0.00; Z=2.02, P=0.04 for CDVA), but the data did not suggest that the effect of trifocal IOL implantation would clinically outperform bifocal IOL implantation. There was no significant difference in monocular near VA (MD=-0.01; 95% CI, -0.07 to 0.04; Z=0.42, P=0.68 for UNVA, and MD=-0.01; 95% CI, -0.06 to 0.03; Z=0.55, P=0.58 for DCNVA) or refraction between two groups. Contrast sensitivity and subjective visual quality had no conclusive results. CONCLUSION: All results indicate that trifocal IOL and bifocal IOL had similar levels of monocular distance and near visual acuities. Besides, contrast sensitivity and subjective visual quality have no conclusive results.     

三种人工晶状体植入术后静态视力和动态视力的评估及比较

目的：对三焦点、双焦点及连续视程人工晶状体植入术后的单眼视力和动态视力（DVA）进行评估及比较。方法：前瞻性临床研究。选取2020年1月至2021年1月于重庆医科大学附属第一医院眼科行白内障超声乳化摘除联合人工晶状体植入且资料完整的白内障患者65例（81眼）。根据所选择的IOL 类型分为3组：双焦点组33眼,植入Tecnis ZMB00 IOL;三焦点组20眼,植入AT Lisatri.839MP IOL;EDOF组28眼,植入Tecnis ZXR00 IOL。术后3个月分别检测每眼的裸眼静态视力（SVA）：包括裸眼远视力（UDVA）、裸眼中视力（UIVA）、裸眼近视力（UNVA）（LogMAR视力）。采用运动视标法检测裸眼DVA（检测速度分别为4、8、12、24fps）：包括裸眼动态远视力（UDDVA)、裸眼动态中视力（UIDVA）、裸眼动态近视力（UNVA）（LogMAR视力）,并进行评估比较。通过“手抓尺子试验”检测患者反应速度。数据采用卡方检验、方差分析、Kruskal-WallisH检验进行统计分析。结果：3组的总体UDVA、UNVA差异均无统计学意义;3组的总体UIVA差异有统计学意义（H=23.13,P<0.001）,进一步两两比较发现EDOF组优于双焦点组（P<0.001）;三焦点组优于双焦点组（P=0.016）;EDOF 组与三焦点组差异无统计学意义。3组的总体UDDVA在4、8fps时差异均无统计学意义;而在12、24fps时总体差异均有统计学意义（H=10.96,P=0.004;H=11.52,P=0.003）,进一步比较发现双焦点组优于三焦点组（H=-16.21,P=0.003;H=-17.98,P=0.004）,EDOF组优于三焦点组（H=-12.67,P=0.030;H=-16.48,P=0.009）,双焦点组与EDOF组差异无统计学意义。3组的总体UIDVA在8fps 时差异无统计学意义,而在4、12、24fps时差异均有统计学意义（H=8.17~11.36,P<0.05）：4、12fps 时,EDOF组优于双焦点组（H=14.61,P=0.013;H=14.52,P=0.009）,与三焦点组差异无统计学意义;24fps时,EDOF组优于双焦点组、三焦点组（H=15.31,P=0.008;H=-16.60,P=0.027）。3组的总体UNDVA在4、8、12、24fps时差异均有统计学意义（H=11.25~17.61,P<0.05）,且EDOF组均分别优于双焦点组（H=12.71~17.87,P<0.05）和三焦点组（H=-23.04~-15.87,P<0.05）,双焦点组与三焦点组差异均无统计学意义（均P>0.05）。结论：在SVA方面,三焦点IOL及EDOFIOL均可获得较好的UDVA、UIVA、UNVA,而双焦点IOL的UIVA较弱。在DVA方面,远距离、低速度时,3种IOL结果相当;但是近距离、高速度时,EDOFIOL的DVA较其余二者更佳。     

双眼三焦点人工晶状体和双焦点人工晶状体植入术后早期视觉质量比较

对双眼植入三焦点人工晶状体（IOL）或双焦点IOL术后早期的视觉质量进行比较研究。方法：前瞻性临床研究。选择武汉爱尔眼科医院2017年4月至2018年5月收治的双眼单纯年龄相关性白内障患者52例（104眼），依据患者选择的IOL进行分组，双眼均植入双焦点IOL 26例（52眼）作为双焦点组，双眼均植入三焦点IOL 26例（52眼）患者作为三焦点组，术后随访3个月，观察2组间裸眼远视力（UDVA）、裸眼中视力（UIVA）、裸眼近视力（UNVA）、矫正远视力（BCDVA）、矫正远中视力（DCIVA）、矫正远近视力（DCNVA）、离焦曲线、对比敏感度、波前像差、调制传递函数等，并进行VF-14-CN生活质量问卷满意度及脱镜率调查。数据采用独立样本t检验、Mann-Whitney U检验及χ2 检验进行统计分析。结果：三焦点组UIVA明显优于双焦点组（Z=-2.347，P=0.019），而2组间 UDVA、UNVA、BCDVA、DCIVA、DCNVA差异均无统计学意义。三焦点组在-1.0、-3.0、-3.5、 -4.0 D离焦下视力明显优于双焦点组（Z=-2.619、-2.452、-2.452、-2.147，P=0.009、0.014、0.014、 0.032）。2组间明视及明视眩光对比敏感度差异均无统计学意义。3、5 mm瞳孔直径时，三焦点组眼内总高阶像差、眼内彗差、眼内三叶草差以及全眼总高阶像差、全眼三叶草差均明显低于双焦点组，差异均有统计学意义（P<0.05）。5 mm瞳孔直径时，三焦点组眼内球差明显低于双焦点组（Z=-3.053， P=0.002），余指标组间差异无统计学意义。2组在3、5 mm瞳孔直径时的调制传递函数差异均无统计学意义。2组间VF-14-CN得分、日常生活脱镜率以及患者满意度差异均无统计学意义。结论：与双眼植入双焦点IOL相比，双眼植入三焦点IOL能够为患者带来更好的中间距离视力，但二者在远近视力、视觉质量以及术后生活质量方面相近。     

多焦点人工晶状体植入术后视觉质量和阅读能力的研究

目的:研究多焦点人工晶状体(IOL)植入术后白内障患者的视觉质量及阅读能力。方法:前瞻性临床研究。选择2018年6月至2019年10月于重庆医科大学附属第一医院眼科就诊并行双眼白内障手术的患者共75例(150眼),依据患者选择的IOL进行分组,双眼植入Tecnis ZCB00 IOL 25例(50眼)作为单焦组,双眼植入Tecnis ZMB00 IOL 25例(50眼)作为双焦组,双眼植入AT Lisa tri.839MP IOL 25例(50眼)作为三焦组,对比3组患者术后3个月时的祼眼远视力(UDVA)、祼眼中视力(UIVA)、祼眼近视力(UNVA) (LogMAR)及阅读能力。使用NEI-RQL-42量表中文版评价3组患者术后视觉质量的差异。数据采用卡方检验、方差分析、Kruskal-Wallis检验、Mann-Whitney U检验进行统计分析。 结果:共75例(150眼)患者纳入研究。3组间UDVA差异无统计学意义( H=3.187, P=0.203)。三焦组UIVA(0.2±0.1)优于双焦组(0.3±0.2) ( Z=-2.041, P=0.041)和单焦组(0.3±0.3) ( Z=-2.142, P=0.032)。三焦组UNVA(0.3±0.2)和双焦组UNVA(0.3±0.2)优于单焦组(0.4±0.2) ( t=2.332, P=0.017;t=3.014, P=0.036)。3组阅读视力( F=0.421, P=0.658)、阅读速度( F=1.754, P=0.182)、阅读错误率( H=6.347, P=0.052)差异均无统计学意义。三焦组近视力维度得分(92±14)和双焦组近视力维度得分(100±11)均高于单焦组(50±42) ( U=-3.139, P=0.005;U=-3.726, P=0.001);三焦组中视力维度得分(100±12)高于双焦组(75±25)和单焦组(25±75) ( U=-2.758, P=0.017;U=-3.145, P=0.002)。三焦组脱镜率维度得分(100±25)和双焦组脱镜率维度得分(100±40)高于单焦组(30±100) ( U=-3.004, P=0.008;U=-3.766, P=0.001)。 结论:多焦点IOL植入患者可获得与单焦点IOL植入患者配戴老花镜时相同的近距离视觉质量;AT Lisa tri.839MP IOL与Tecnis ZMB00 IOL可提供相同的远近视力及近距离阅读能力,但前者中距离视觉质量更佳。     

两种新型多功能人工晶状体矫正老视的疗效比较

目的:比较双焦点人工晶状体(AtLisa tri 809MP)与三焦点人工晶状体(AtLisa tri 839MP)植入术后矫正老视疗效的差异。方法:纳入于我院行白内障超声乳化吸除联合人工晶状体植入术的患者共40例51眼进行分析,其中A组20例25眼植入809MP双焦点人工晶状体,B组20例26眼植入839MP三焦点人工晶状体。收集两组患者术后3mo时远中近视力数值、离焦曲线分析,并通过满意度调查问卷进行统计分析。结果:术后3mo两组裸眼远视力与最佳矫正视力均无差异(P>0.05);中距离视力(80cm)B组显著优于A组(P<0.01);近距离视力改善程度A组、B组无差异(P>0.05)。术后3mo离焦曲线结果A组在0、-3D处形成2个波峰;B组在0、-2.5D处形成2个波峰;两组患者术后均有不同程度的眩光、光晕等表现,但总体满意度较高,视近满意度较高。结论:两种类型人工晶状体均可以为患者提供兼顾远、近的全程视力,术后近距离视物脱镜率高,均可提高良好的近距离视力,三焦点人工晶状体中距离视力更好。     

Comparison of trifocal toric and bifocal toric intraocular lens implantation in patients with cataract and high corneal astigmatism

AIM: To investigate and compare the quality of life, satisfaction, contrast sensitivity, glare, depth perception, and intraocular lens (IOL) rotation in patients who underwent trifocal toric and bifocal toric IOLs. METHODS: A total of 80 eyes of 40 patients were included in this prospective study. Twenty patients in each group were implanted with trifocal toric and bifocal toric IOL, respectively. Preoperative and postoperative 6-month measurements were recorded for both patient groups. Comprehensive anterior and posterior segment examinations, distance-intermediate-near visual acuity values and the visual function scale questionnaire results were evaluated at these examinations. Patient satisfaction, contrast sensitivity, glare, intermediate-near and distance stereopsis and IOL rotation were also evaluated. RESULTS: No significant difference was found between the groups in terms of distance and near visual acuities (P=0.269, P=0.451). Intermediate visual acuity was significantly increased in the trifocal toric group (P<0.001). The visual function scale results were increased after surgery in both groups (P=0.001 and P<0.001), with no difference determined between them (P=0.158 and P=0.691). The number of patients wearing glasses was low in both groups and there was no significant difference between the groups (P>0.05). The overall satisfaction in the trifocal toric group was significantly higher than in the bifocal toric group (P=0.03). The highest sensitivity was observed at 6 cpd spatial frequency in all patients under photopic conditions (1.80±0.24 logU, 1.74±0.20 logU). Distance-intermediate-near binocular depth perception results in both groups were higher in the trifocal toric group (P=0.02, 0.048, 0.003, respectively). Although there was no significant difference for 3 meters stereopsis, the trifocal toric group had higher depth perception (P=0.577). Mean rotation was 5.76°±3.93° in the trifocal toric group and 12°±7.1° in the bifocal toric group. CONCLUSION: Better results in the middle distance are obtained in the trifocal toric group and less IOL rotation due to digital system-coordinated surgery. Moreover, the overall satisfaction in the trifocal toric group is significantly higher than in the bifocal toric group.     

Comparative analysis of visual quality between unilateral implantation of a trifocal intraocular lens and a rotationally asymmetric refractive multifocal intraocular lens

AIM: To compare visual quality after unilateral cataract surgery with implantation of trifocal intraocular lens (IOL) and asymmetric refractive multifocal IOL. METHODS: The prospective nonrandom, comparative study consisted of 60 eyes of 60 patients suffering unilateral cataract surgery with implantation of two different IOLs: AT LISA tri 839MP (30 eyes; Carl Zeiss Meditec, Germany) and LS-313 MF30 (30 eyes; Oculentis GmbH, Germany). Visual acuity, refractive outcome, contrast sensitivity, defocus curves, quality of vision, and optical phenomena were evaluated at 3mo postoperatively. RESULTS: There were no statistical differences between groups in uncorrected distance visual acuity (P=0.13) and uncorrected near visual acuity (P=0.54). In contrast, uncorrected intermediate visual acuity was better in trifocal group compared to the refractive multifocal group (P=0.02). No significant statistical between-group difference was detected in cylinder (P=0.43). Compared to trifocal group, spherical refraction and spherical equivalent in refractive multi focal group were more myopic (P<0.01). Under photopic conditions, no significant statistical differences were found between groups in contrast sensitivity at 3 and 6 cycles per degree (cpd). The refractive multifocal group performed better at 12 and 18 cpd than the trifocal group (P=0.01, P=0.034, respectively). The questionnaires of quality of vision and optical phenomena showed no differences between groups. CONCLUSION: Trifocal IOL is superior to refractive multifocal IOL in intermediate visual acuity. Rotationally asymmetric refractive multifocal IOL is more myopic in automated refraction and significantly better for the photopic contrast sensitivity at high frequency.     

两焦点与三焦点人工晶状体植入术后视觉质量的比较

目的:比较两焦点(AT LISA 809MP)和三焦点(AT LISA tri 839MP)IOL植入术后的视觉质量。方法:回顾性研究。共收集2018-03/2019-02行超声乳化吸除术联合多焦点IOL植入术的白内障患者28例49眼。两焦点组18例30眼,年龄40~85(平均67.08±10.80)岁。三焦点组10例19眼,年龄38~79(平均62.21±14.50)岁。所有患者均行视觉质量分析系统(OQAS)、离焦曲线等检查。结果:两焦点组近BCVA优于三焦点,三焦点组中UCVA和远BCVA均优于两焦点组(P<0.05)。三焦点组+1.5、-1.0、-1.5、-2.0、-2.5、-3.0D视力显著优于两焦点组。两组间OQAS视觉质量参数两焦点组OV 20%、OV 9%、SR均优于三焦点组(P<0.05)。结论:两焦点和三焦点IOL植入术后均可获得良好的裸眼远和近视力,视觉质量均较高,而三焦点IOL可获得更佳的中间视力。     

不同种类人工晶状体植入术后患者的客观视觉质量及视觉相关生活质量的对比研究

目的　比较不同种类的人工晶状体（IOL）植入术后患者的客观视觉质量及视觉相关生活质量。方法　采用非随机对照研究设计，收集2020年7月至2021年12月在天津市眼科医院进行超声乳化白内障吸除联合IOL植入术的年龄相关性白内障患者85例（136眼），其中，双焦点IOL组23例（34眼），景深延长型IOL组21例（33眼），三焦点IOL组17例（30眼），单焦点IOL组24例（39眼）。测量四组患者术后1 d、1周、1个月和3个月裸眼远、中、近视力及矫正远、中、近视力，并绘制四组患者IOL离焦曲线，同时问卷调查四组患者的视觉满意度及脱镜率。结果　同一时间点，四组患者术后裸眼远视力及术后矫正远视力差异均无统计学意义(均为P>0.05)。同一时间点，四组患者术后裸眼中视力、裸眼近视力差异均有统计学意义（均为P<0.05):景深延长型IOL组和三焦点IOL组患者术后裸眼中视力均优于双焦点IOL组和单焦点IOL组（均为P<0.05)，单焦点IOL组与双焦点、三焦点以及景深延长型IOL组患者术后裸眼近视力差异均有统计学意义（均为P<0.05）；景深延长型IOL组与双焦点和三焦点IOL组患者术后裸眼近视力差异均有统计学意义（均为P<0.05）。单焦点和景深延长型IOL组患者术后视觉干扰情况少于双焦点和三焦点IOL组，双焦点和三焦点IOL组患者术后眼部不适症状均少于单焦点和景深延长型IOL组,景深延长型IOL组患者术后眼部不适症状少于单焦点IOL组，双焦点、三焦点和景深延长型IOL组患者术后视力主观感受优于、配戴老视眼镜情况均少于单焦点IOL组，差异均有统计学意义（均为P<0.05）。结论　植入双焦点、三焦点、景深延长型IOL均能有效地提高患者术后的全程视力，植入三焦点IOL和双焦点IOL术后部分患者存在轻度视觉不良现象。     

双通道技术评价两种衍射型多焦点人工晶状体视网膜成像质量

目的:研究两种非球面衍射型多焦点人工晶状体(IOL)视网膜成像质量。方法:回顾性队列研究。选取2017-10/2019-10诊断为单纯性白内障,行超声乳化吸除联合IOL植入155例155眼为研究对象,植入非球面衍射双焦点IOL 54例54眼、非球面衍射三焦点IOL 54例54眼、单焦点IOL 47例47眼做对照组。随访术后6mo,双通道视觉质量分析系统测量散射指数(OSI)、调制传递函数截止频率(MTF cut off)、斯特列尔比值(SR)、100%、20%、9%模拟对比度视力(OV);记录术后裸眼远距离(5m)、中距离(80cm)、近距离(40cm)视力及矫正远视力、矫正远视力基础上的中距离视力和近距离视力;利用VF-14量表进行评分。结果:双焦组和三焦组MTF cut off均低于单焦组(P=0.007、0.043),双焦和三焦组无差异(P=0.445)。三组OSI值无差异(F=1.143,P=0.322),三组SR值无差异(F=3.045,P=0.051)。双焦组和三焦组模拟对比度视力无差异(OV 100%:P=0.974;OV 20%:P=0.713;OV 9%:P=0.947),而双焦和三焦组均低于单焦点组(OV 100%:双焦vs单焦P=0.001;三焦vs单焦P=0.012;OV 20%:双焦vs单焦P=0.002;三焦vs单焦P=0.043;OV 9%:双焦vs单焦P=0.011;三焦vs单焦P=0.029)。三组术后裸眼远视力及矫正远视力均无差异(P=0.054、0.180)。双焦组与单焦组裸眼中视力有差异(P=0.010),三焦组与单焦组、双焦组均有差异(P<0.01)。双焦组和三焦组裸眼近视力无差异(P=0.428),双焦组和三焦组与单焦组均有差异(P<0.01)。三组患者远视力矫正基础上中视力有差异(H=67.176,P<0.01),双焦组与单焦组有差异(P<0.01),三焦组与单焦组和双焦组均有差异(P<0.01)。三组远视力矫正基础上近视力均有差异(H=91.292,P<0.01),双焦组和三焦组无差异(P=0.519),双焦组和三焦组与单焦组均有差异(P<0.01)。三组VF-14表评分有差异(H=71.342,P<0.01),双焦组和三焦组评分无差异(P=0.055),双焦组和三焦组与单焦组均有差异(P<0.01)。结论:双通道视觉系统评估三焦点、双焦点衍射型人工晶状体视网膜成像质量无差别;三焦点较双焦点人工晶状体,可提供更佳的中距离视力。     

三种不同IOL植入术后短期的视力和视觉干扰现象及脱镜率的对比

目的：对比分析单眼植入三焦点、多焦点及连续视程人工晶状体(IOL)术后短期的视力、视觉干扰现象及脱镜率。方法：回顾性分析2019-03/2022-12行超声乳化白内障吸除联合IOL植入术的白内障患者67例67眼。35例35眼植入Symfony连续视程IOL； 21例21眼植入AcrySof IQ ReSTOR+3D多焦点IOL； 11例11眼植入AcrySof IQ PanOptix三焦点IOL。记录术前及术后3 mo裸眼远视力(UDVA)、中视力(UIVA)、近视力(UNVA)，术后3 mo离焦曲线、视觉干扰现象及脱镜率。结果：术后3 mo，三组间UDVA无差异(P&#x003E;0.05)； Symfony组及PanOptix组UIVA优于ReSTOR组(均P&#x003C;0.01)； ReSTOR组及PanOptix组UNVA优于Symfony组(均P&#x003C;0.01)。离焦曲线显示，在中视力区间(-1.00--1.50 D)，Symfony组视力优于ReSTOR组(P&#x003C;0.05)； 在近视力区间(-2.50--3.50 D)，ReSTOR组视力优于Symfony组(P&#x003C;0.05)； PanOptix组在近视力区间(-2.00--3.50 D)的视力优于Symfony组(P&#x003C;0.05)，同时在中视力区间(-1.00--2.00 D)的视力优于ReSTOR组(P&#x003C;0.05)。三组间眩光或光晕的发生率及双眼相互干扰现象发生率均无差异(P&#x003E;0.05)。PanOptix组和ReSTOR组脱镜率比Symfony组高(P&#x003C;0.0167)。结论：与Symfony连续视程IOL和ReSTOR多焦点IOL相比，PanOptix三焦点IOL能够兼顾远中近视力，眩光和光晕发生率不高，脱镜率较高； 单眼植入老视矫正型IOL仍需慎重。     

Toric IOL植入术与PCRI联合传统IOL植入术矫正白内障患者角膜散光的Meta分析

目的：:系统评价Toric人工晶状体（Toric IOL）植入术与传统IOL植入联合角膜缘松解术（PCRI）在矫正年龄相关性白内障患者合并≤3 D角膜散光的有效性、安全性以及对视功能的影响。方法：:循证医学研究。采用Cochrane系统评价方法,计算机检索PubMed、EMBASE、Cochrane图书馆、Clinic...     

Comparison of visual and refractive outcomes of diffractive bifocal toric and trifocal toric intraocular lenses 12 months after implantation in patients with moderate to high myopia

Purpose

To compare the visual and refractive outcomes of bifocal toric and trifocal toric intraocular lenses (IOL) in patients with moderate to high myopia at 12 months after implantation.

Method

This is a prospective and comparative study. In 120 eyes with moderate to high myopia and astigmatism, bifocal toric IOLs (n?=?60 eyes) or trifocal toric IOLs (n?=?60 eyes) were implanted. Eyes with axial lengths from 24.0 to 26.5 mm were included. Postoperative examinations measured near, intermediate, and distance visual acuity (VA), along with refractive measurements, binocular defocus curves, and patient satisfaction with the National Eye Institute Visual Function Questionnaire.

Results

For uncorrected- and corrected distance intermediate VA, the trifocal group showed significantly better VA at 1, 3, 6, and 12 months than the bifocal group. Driving subscale scores from the questionnaire were significantly better in the trifocal than the bifocal group. Concerning the binocular defocus curve, uncorrected distance VA was significantly higher in the trifocal than bifocal group at test distances of -1.5 D.

Conclusions

Both trifocal and bifocal toric IOLs effectively corrected the near, intermediate, and distance vision in patients with moderate to high myopia and astigmatism. However, intermediate vision was significantly better in eyes with trifocal than bifocal toric IOLs.

     

单眼白内障患者植入多焦点人工晶状体与单焦点人工晶状体后的双眼视功能比较

目的比较单眼白内障患者植入多焦点人工晶状体（IOL）或单焦点IOL后的双眼视功能。方法前瞻性非随机对照研究。2013年6月至2014年12月期间,在我院行白内障超声乳化联合IOL植入术的单眼白内障患者80例（80眼）,根据植入的IOL类型分为2组,各40例（40眼）。观察组植入多焦点IOL,对照组植入单焦点IOL。术后随访3个月,观察指标包括术眼单眼及双眼远（5 m）、中（70 cm）、近（40 cm）视力,双眼对比敏感度,近立体视,脱镜率,视觉干扰现象及患者满意度。术后视力及对比敏感度比较采用独立样本t检验;脱镜率及光干扰现象发生率的比较采用χ²检验;近立体视、视力满意度评分比较采用Mann-Whitney U检验。结果观察组双眼裸眼远、中、近视力分别为0.03±0.04、0.17±0.07、0.15±0.06,对照组双眼裸眼远、中、近视力分别为0.05±0.05、0.27±0.08、0.31±0.09,观察组双眼裸眼中视力和近视力优于对照组（t=3.925、3.429,P＜0.01）,而2组间双眼裸眼远视力差异无统计学意义（t=0.356,P＞0.05）。双眼在空间频率为3、6、12、18 c/d时,观察组无眩光对比敏感度和有眩光对比敏感度均低于对照组（无眩光：t=3.463、3.361、2.198、2.574,P＜0.05;有眩光：t=3.105、2.432、2.758、3.207,P＜0.05）。观察组近立体视优于对照组（Z=2.578,P＜0.05）,脱镜率（88%）高于对照组（28%）（χ²=8.240,P＜0.05）,2组间视远满意度评分差异无统计学意义（Z=0.598,P＞0.05）,而观察组视中和视近满意度评分均高于对照组（Z=2.314、3.137,P＜0.05）。2组间视觉干扰眩光现象差异无统计学意义（χ²=0.602,P＞0.05）,而观察组光晕现象多于对照组（χ²=8.807,P＜0.05）。结论单眼白内障患者植入多焦点IOL相比单焦点IOL能提供更好的双眼中、近视力,双眼立体视,脱镜率及患者满意度,但对比敏感度有所降低。     

双焦点及散光双焦点人工晶状体混搭植入术后双眼视觉质量的研究

目的：研究散光矫正型双焦点人工晶状体与双焦点人工晶状体混搭植入术后的双眼视觉质量。

方法：横断面研究。纳入2020-01/2021-01收治的年龄相关性白内障患者54例108眼,按植入人工晶状体及术前角膜散光不同分为3组,A组21例42眼术前角膜散光均<1.0D,双眼植入双焦点人工晶状体; B组15例30眼术前角膜散光均≥1.0D,双眼植入散光双焦点人工晶状体; C组18例36眼,一眼术前角膜散光<1.0D,另一眼术前角膜散光≥1.0D,前者植入双焦点人工晶状体,后者植入散光双焦点人工晶状体。比较三组患者术前单眼视力,术后双眼视力、残余散光、双眼离焦曲线、对比敏感度(CS),三组患者术后进行问卷调查评估视觉质量。

结果：三组患者术前视力、术前眼压均无差异(P>0.05)。A组术后残余散光显著高于另两组(P=0.012,<0.05)。B组和C组双眼远视力优于A组(均P<0.05); B组和C组双眼近视力优于A组(均P<0.01); A组双眼中视力优于B组和C组(均P<0.01)。明视眩光6、12c/d,暗视6、12、18c/d,以及暗视眩光1.5、3、6、12、18c/d的空间频率下A组CS较B组和C组显著降低(均P<0.05)。术后视功能调查表三组间无差异(P>0.05)。

结论：散光双焦人工晶状体与双焦人工晶状体混搭植入可改善患者术后视觉质量。矫正散光有助于提高术后患者的视觉CS,但是散光全矫后,可能会导致患者术后中视力的下降。     

Prospective randomised double-masked trial of bilateral multifocal,bifocal or monofocal intraocular lenses

AIMS: To evaluate the functional effect of bilateral implantation of two different multifocal intraocular lenses (IOL) compared with the standard monofocal IOL. METHODS: Sixty-nine patients were recruited into a prospective, double-masked, randomised, controlled trial at a single hospital in the United Kingdom. Sixty completed follow-up; 16 implanted with monofocal IOLs, 29 with AMO 'ARRAY' multifocal IOLs and 15 with Storz 'TRUEVISTA' bifocal IOLs. Phacoemulsification and IOL implantation was performed to a standardised technique in both eyes within a 2-month period. The main outcome measures were distance and near visual acuity, depth of field and validated assessment of subjective function (TyPE questionnaire). RESULTS: naided distance acuity was good, and equivalent across the three groups. Corrected distance acuity was significantly lower in the bifocal group. Patients with multifocal and bifocal IOLs could read smaller absolute print size than those in the monofocal group (P = 0.05), but at a closer reading distance such that mean unaided near acuity was equal in the three groups. Corrected near acuity was significantly higher in the monofocal control group (P < 0.05). Depth of field was increased in multifocal (P = 0.06) and bifocal (P = 0.004) groups. Overall visual satisfaction was equal in the three groups, while near visual satisfaction was higher in the multifocal group than the monofocal (P = 0.04). Spectacle independence was not seen in the monofocal group, but was achieved in 28% of multifocal IOL patients and 33% of bifocal patients (P < 0.001). Adverse symptoms such as glare and haloes were significantly more bothersome with multifocal (not bifocal) IOLs than monofocals (P = 0.01). CONCLUSIONS: Multifocal and bifocal IOLs improved unaided near vision performance, with around one in three patients becoming spectacle-independent. The main adverse effect was an increased incidence of subjective glare and haloes in the multifocal IOL group.     

连续视程与三焦点人工晶状体植入术后视觉质量的比较

目的：比较Tecnis Symfony连续视程人工晶状体与Zeiss三焦点人工晶状体(At Lisa tri 839MP)植入术后患者视觉质量的差异。

方法：选取2019-01/2020-12于我院行白内障超声乳化吸除联合人工晶状体植入术的患者42例53眼,其中A组22例29眼植入Tecnis Symfony连续视程人工晶状体,B组20例24眼植入Zeiss三焦点人工晶状体。观察两组患者术后3mo时远中近视力,绘制离焦曲线,并评估生活质量,记录并发症发生情况。

结果：术后3mo,两组患者视力均明显改善,两组患者裸眼远(5m)、中(80cm)距离视力及最佳矫正远距离视力(5m)无差异(均P>0.05),但B组患者裸眼中(60cm)、近(40cm)距离视力优于A组(均P<0.05)。术后3mo绘制离焦曲线示A组在+1.0～-2.0D段跨度平稳形成平台期; B组在0、-2.5D处形成两个波峰; 0D处两组远视力无显著差异(P>0.05),-2.5、-3.5D处B组近视力显著优于A组(均P<0.01)。两组患者术后脱镜率均在90%以上,均出现不同程度眩光、光晕等光学现象,但生活质量总体满意度较高,A组阅读速度明显高于B组,且夜间视物满意度较高(均P<0.05)。

结论：两种类型人工晶状体植入术后脱镜率均在90%以上,可为患者提供兼顾远、中、近的全程视力,Symfony连续视程人工晶状体植入术后流畅阅读及夜间视物满意度较高; Zeiss三焦点人工晶状体植入术后近距离视力更好,更适合近距离工作者。     

衍射型多焦点人工晶状体植入术后临床效果

目的:探讨衍射型多焦点人工晶状体植入术后的临床效果。方法:所有患者按照植入的人工晶状体类型分成多焦组和单焦组。多焦组植入衍射型多焦点人工晶状体AcrySof ReSTOR(Alcon),72例(109眼);单焦组植入单焦点人工晶状体AcrySof SA60AT(Alcon)作为对照,88例(130眼)。术后随访6~24mo,观察瞳孔直径,远近视力,最佳矫正视力,脱镜率,术后屈光状态、夜间视觉干扰现象等指标。结果:两组间在远视力和最佳矫正远近视力方面没有显著性差异,而近视力多焦组达到或超过J3的患者101眼(92.7%),单焦组12眼(9.2%),差异具有显著性(χ2=166.44,P=0.00)。两组完全脱镜率分别为98眼(89.9%)和9眼(6.9%)。多焦组完全脱镜的患者术后平均等效球镜为-0.03±0.45D(-1.0~+0.50D),6例7眼(6.4%)视近远时都需戴镜矫正,术后平均等效球镜+1.14D。结论:衍射型多焦点人工晶状体植入后能够使患者获得理想的远近视力,大大降低了患者对眼镜的依赖性。人工晶状体的屈光力测量精确性是增加术后脱镜率的重要因素,应该尽量避免术后等效球镜大于+0.50D。     

景深延长型人工晶状体Symfony ZXR00的视觉质量研究

目的 评价Symfony ZXR00植入术后患者的视觉质量。设计前瞻性非随机对照研究。研究对象2021年6月至2022年1月于解放军总医院第六医学中心行白内障超声乳化摘除联合IOL植入术的患者42例(42眼),其中植入Symfony ZXR00IOL者18例(18眼),单焦点IOL A1-UV 24例(24眼)。方法比较两组术后3个月视力、对比敏感度、离焦曲线,并对光学干扰现象、脱镜率和视物满意度进行调查和分析。主要指标视力(LogMar)、对比敏感度、离焦曲线、光学干扰现象、脱镜率和视物满意度。结果术后3个月,Symfony组的裸眼远视力(-0.04±0.08)、裸眼中视力(-0.03±0.08)、裸眼近视力(0.28±0.16)、矫正近视力(-0.03±0.05)、矫正远视力下的中视力(-0.04±0.07)、矫正远视力下的近视力(0.27±0.13)显著优于单焦点A1-UV组(0.03±0.10、0.32±0.09、0.39±0.17、-0.01±0.02、0.30±0.11、0.48±0.19),P均<0.05;矫正远视力差异无统计学意义。Symfony组在-2.50 D...     

单眼视设计双侧人工晶状体眼视功能的临床观察

目的研究单眼视设计的人工晶状体眼术后视力及立体视功能。方法双眼先后行白内障超声乳化摘除联合单焦点人工晶状体植入术的年龄相关性白内障患者31例．一眼按术后为正视眼,另一眼按术后为-1．75D近视植入相应度数人工晶状体。术后应用同视机测量远立体视锐度．应用Randot立体视图测量近立体视锐度．应用双眼影像不等检查图测量视近时的双眼不等像。结果31例患者术后双眼裸眼下的远立体视锐度为400弧秒（中位数,以下同）,对近视的眼远矫正后改善至60弧秒,两者比较差异有显著统计学意义（P〈0．01）：术后双眼裸眼下的近立体视锐度为50弧秒。正视眼裸眼远视力为-0．04±0．08（LogMAR）,近视眼裸眼远视力是0．34±0．13,两者比较差异有非常显著的统计学意义（P〈0．011：正视眼裸眼近视力是0．56±0．12．近视眼裸眼近视力是0．24±0．10,两者比较差异有显著统计学意义（P〈0.001）。双眼裸眼状态下视近时的近不等像值为3．71％±1．55％。结论按照单眼视设计的双侧人工晶状体眼能同时获得良好的裸眼远、近视力以及正常的近立体视功能．而双眼裸眼状态下的远立体视功能受到一定影响。