黄色非球面人工晶状体植入术后视觉质量的临床分析

目的 观察老年性白内障患者植入黄色非球面人工晶状体AcrySof IQ术后对比敏感度和眩光敏感度.方法 前瞻性临床对照研究.56例(56只眼)老年性白内障患者,随机分为三组,分别植入非球面人工晶状体AerySof IQ(SN60wF)及球面人工晶状体Acrysof Natural(SN60AT)、Acrysof (SA60AT).术后2月行最佳矫正视力、像差及对比敏感度检查.结果 三组患者术后最佳矫正视力≥20/30.IQ组与球面晶状体组比较,球差均显著性减少(P<0.05),高阶像差及彗差无统计学意义(P0.05).在非眩光状态下,低频时IQ组的对比敏感度(10g值)显著高于球面晶状体组(P<0.05),中频2.5deg时IQ组的对比敏感度显著高于SA60AT组(P<0.05).在眩光状态下,低频时IQ组的对比敏感度也显著高于球面晶状体组(SN60AT组:P<0.01,SA60AT组:6.3degrees P<0.01,4.0degrees P<0.05).结论 非球面人工晶状体可以减少球面像差,提高低频尤其是眩光状态下的对比敏感度从而获得更好的视觉质量.滤蓝光晶状体与普通晶状体比较对比敏感度差异无统计学意义,不能明显改善视功能.     

黄色非球面人工晶状体植入术后视觉质量的临床分析

目的 观察老年性白内障患者植入黄色非球面人工晶状体AcrySof IQ术后对比敏感度和眩光敏感度.方法 前瞻性临床对照研究.56例(56只眼)老年性白内障患者,随机分为三组,分别植入非球面人工晶状体AerySof IQ(SN60wF)及球面人工晶状体Acrysof Natural(SN60AT)、Acrysof (SA60AT).术后2月行最佳矫正视力、像差及对比敏感度检查.结果 三组患者术后最佳矫正视力≥20/30.IQ组与球面晶状体组比较,球差均显著性减少(P<0.05),高阶像差及彗差无统计学意义(P0.05).在非眩光状态下,低频时IQ组的对比敏感度(10g值)显著高于球面晶状体组(P<0.05),中频2.5deg时IQ组的对比敏感度显著高于SA60AT组(P<0.05).在眩光状态下,低频时IQ组的对比敏感度也显著高于球面晶状体组(SN60AT组:P<0.01,SA60AT组:6.3degrees P<0.01,4.0degrees P<0.05).结论 非球面人工晶状体可以减少球面像差,提高低频尤其是眩光状态下的对比敏感度从而获得更好的视觉质量.滤蓝光晶状体与普通晶状体比较对比敏感度差异无统计学意义,不能明显改善视功能.     

黄色非球面人工晶状体植入术后视觉质量的临床分析

目的 观察老年性白内障患者植入黄色非球面人工晶状体AcrySof IQ术后对比敏感度和眩光敏感度.方法 前瞻性临床对照研究.56例(56只眼)老年性白内障患者,随机分为三组,分别植入非球面人工晶状体AerySof IQ(SN60wF)及球面人工晶状体Acrysof Natural(SN60AT)、Acrysof (SA60AT).术后2月行最佳矫正视力、像差及对比敏感度检查.结果 三组患者术后最佳矫正视力≥20/30.IQ组与球面晶状体组比较,球差均显著性减少(P<0.05),高阶像差及彗差无统计学意义(P0.05).在非眩光状态下,低频时IQ组的对比敏感度(10g值)显著高于球面晶状体组(P<0.05),中频2.5deg时IQ组的对比敏感度显著高于SA60AT组(P<0.05).在眩光状态下,低频时IQ组的对比敏感度也显著高于球面晶状体组(SN60AT组:P<0.01,SA60AT组:6.3degrees P<0.01,4.0degrees P<0.05).结论 非球面人工晶状体可以减少球面像差,提高低频尤其是眩光状态下的对比敏感度从而获得更好的视觉质量.滤蓝光晶状体与普通晶状体比较对比敏感度差异无统计学意义,不能明显改善视功能.     

Drug-induced intraocular lens movement and near visual acuity after AcrySof intraocular lens implantation

PURPOSE: To evaluate the factors influencing AcrySof intraocular lens (IOL) (Alcon Laboratories) movement and near visual acuity after cyclopentolate 1% and pilocarpine 2%. SETTING: Department of Ophthalmology, University of Ankara, Ankara, Turkey. METHODS: Thirty eyes of 22 patients with AcrySof IOL implantation were included in this prospective study. Near visual acuity (Jaeger) at 35 cm through best distance correction without an add and pupil diameter were measured and correlated with anterior chamber depth (ACD) measured with ultrasound biomicroscopy (UBM) after application of cyclopentolate 1% and pilocarpine 2%, respectively. The magnitude of the change in the ACD was correlated with the accommodation amplitude, patient age, time interval between surgery and imaging, preoperative axial length, capsulorhexis diameter, ACD during cycloplegia, IOL diameter, and presence of posterior capsule opacification (PCO). RESULTS: Near visual acuity significantly decreased after application of cyclopentolate 1% and increased after application of pilocarpine 2% (P < .001) in all eyes. The IOL moved anteriorly in 8 (26%) eyes and posteriorly in 22 (74%) eyes after pilocarpine 2%. There was no correlation between the ACD and near visual acuity under cyclopentolate 1% (r = 0.06, P > .05) or pilocarpine 2% (r = 0.04, P > .05). There was a moderate correlation between the anterior IOL movement and accommodation amplitude (P < .05, r = 0.42). There was no correlation between the magnitude of the IOL movement and patient age, time interval between surgery and imaging, the preoperative axial length, capsulorhexis diameter, ACD during cycloplegia, IOL diameter, and the presence of PCO (P > .05). CONCLUSIONS: There was better near visual acuity in all eyes with the AcrySof MAIOL, although most IOLs move slightly backward after of pilocarpine 2%. This points out pseudoaccommodation rather than pseudophakic accommodation. Ultrasound biomicroscopy is useful in determining the ACD and the relation between the IOL and the surrounding tissues after cataract surgery.     

黄色非球面人工晶状体植入术后视觉质量的临床分析

目的 观察老年性白内障患者植入黄色非球面人工晶状体AcrySof IQ术后对比敏感度和眩光敏感度.方法 前瞻性临床对照研究.56例(56只眼)老年性白内障患者,随机分为三组,分别植入非球面人工晶状体AerySof IQ(SN60wF)及球面人工晶状体Acrysof Natural(SN60AT)、Acrysof (SA60AT).术后2月行最佳矫正视力、像差及对比敏感度检查.结果 三组患者术后最佳矫正视力≥20/30.IQ组与球面晶状体组比较,球差均显著性减少(P<0.05),高阶像差及彗差无统计学意义(P0.05).在非眩光状态下,低频时IQ组的对比敏感度(10g值)显著高于球面晶状体组(P<0.05),中频2.5deg时IQ组的对比敏感度显著高于SA60AT组(P<0.05).在眩光状态下,低频时IQ组的对比敏感度也显著高于球面晶状体组(SN60AT组:P<0.01,SA60AT组:6.3degrees P<0.01,4.0degrees P<0.05).结论 非球面人工晶状体可以减少球面像差,提高低频尤其是眩光状态下的对比敏感度从而获得更好的视觉质量.滤蓝光晶状体与普通晶状体比较对比敏感度差异无统计学意义,不能明显改善视功能.     

黄色非球面人工晶状体植入术后视觉质量的临床分析

目的 观察老年性白内障患者植入黄色非球面人工晶状体AcrySof IQ术后对比敏感度和眩光敏感度.方法 前瞻性临床对照研究.56例(56只眼)老年性白内障患者,随机分为三组,分别植入非球面人工晶状体AerySof IQ(SN60wF)及球面人工晶状体Acrysof Natural(SN60AT)、Acrysof (SA60AT).术后2月行最佳矫正视力、像差及对比敏感度检查.结果 三组患者术后最佳矫正视力≥20/30.IQ组与球面晶状体组比较,球差均显著性减少(P<0.05),高阶像差及彗差无统计学意义(P0.05).在非眩光状态下,低频时IQ组的对比敏感度(10g值)显著高于球面晶状体组(P<0.05),中频2.5deg时IQ组的对比敏感度显著高于SA60AT组(P<0.05).在眩光状态下,低频时IQ组的对比敏感度也显著高于球面晶状体组(SN60AT组:P<0.01,SA60AT组:6.3degrees P<0.01,4.0degrees P<0.05).结论 非球面人工晶状体可以减少球面像差,提高低频尤其是眩光状态下的对比敏感度从而获得更好的视觉质量.滤蓝光晶状体与普通晶状体比较对比敏感度差异无统计学意义,不能明显改善视功能.     

黄色非球面人工晶状体植入术后视觉质量的临床分析

目的 观察老年性白内障患者植入黄色非球面人工晶状体AcrySof IQ术后对比敏感度和眩光敏感度.方法 前瞻性临床对照研究.56例(56只眼)老年性白内障患者,随机分为三组,分别植入非球面人工晶状体AerySof IQ(SN60wF)及球面人工晶状体Acrysof Natural(SN60AT)、Acrysof (SA60AT).术后2月行最佳矫正视力、像差及对比敏感度检查.结果 三组患者术后最佳矫正视力≥20/30.IQ组与球面晶状体组比较,球差均显著性减少(P<0.05),高阶像差及彗差无统计学意义(P0.05).在非眩光状态下,低频时IQ组的对比敏感度(10g值)显著高于球面晶状体组(P<0.05),中频2.5deg时IQ组的对比敏感度显著高于SA60AT组(P<0.05).在眩光状态下,低频时IQ组的对比敏感度也显著高于球面晶状体组(SN60AT组:P<0.01,SA60AT组:6.3degrees P<0.01,4.0degrees P<0.05).结论 非球面人工晶状体可以减少球面像差,提高低频尤其是眩光状态下的对比敏感度从而获得更好的视觉质量.滤蓝光晶状体与普通晶状体比较对比敏感度差异无统计学意义,不能明显改善视功能.     

黄色非球面人工晶状体植入术后视觉质量的临床分析

目的 观察老年性白内障患者植入黄色非球面人工晶状体AcrySof IQ术后对比敏感度和眩光敏感度.方法 前瞻性临床对照研究.56例(56只眼)老年性白内障患者,随机分为三组,分别植入非球面人工晶状体AerySof IQ(SN60wF)及球面人工晶状体Acrysof Natural(SN60AT)、Acrysof (SA60AT).术后2月行最佳矫正视力、像差及对比敏感度检查.结果 三组患者术后最佳矫正视力≥20/30.IQ组与球面晶状体组比较,球差均显著性减少(P<0.05),高阶像差及彗差无统计学意义(P0.05).在非眩光状态下,低频时IQ组的对比敏感度(10g值)显著高于球面晶状体组(P<0.05),中频2.5deg时IQ组的对比敏感度显著高于SA60AT组(P<0.05).在眩光状态下,低频时IQ组的对比敏感度也显著高于球面晶状体组(SN60AT组:P<0.01,SA60AT组:6.3degrees P<0.01,4.0degrees P<0.05).结论 非球面人工晶状体可以减少球面像差,提高低频尤其是眩光状态下的对比敏感度从而获得更好的视觉质量.滤蓝光晶状体与普通晶状体比较对比敏感度差异无统计学意义,不能明显改善视功能.     

黄色非球面人工晶状体植入术后视觉质量的临床分析

目的 观察老年性白内障患者植入黄色非球面人工晶状体AcrySof IQ术后对比敏感度和眩光敏感度.方法 前瞻性临床对照研究.56例(56只眼)老年性白内障患者,随机分为三组,分别植入非球面人工晶状体AerySof IQ(SN60wF)及球面人工晶状体Acrysof Natural(SN60AT)、Acrysof (SA60AT).术后2月行最佳矫正视力、像差及对比敏感度检查.结果 三组患者术后最佳矫正视力≥20/30.IQ组与球面晶状体组比较,球差均显著性减少(P<0.05),高阶像差及彗差无统计学意义(P0.05).在非眩光状态下,低频时IQ组的对比敏感度(10g值)显著高于球面晶状体组(P<0.05),中频2.5deg时IQ组的对比敏感度显著高于SA60AT组(P<0.05).在眩光状态下,低频时IQ组的对比敏感度也显著高于球面晶状体组(SN60AT组:P<0.01,SA60AT组:6.3degrees P<0.01,4.0degrees P<0.05).结论 非球面人工晶状体可以减少球面像差,提高低频尤其是眩光状态下的对比敏感度从而获得更好的视觉质量.滤蓝光晶状体与普通晶状体比较对比敏感度差异无统计学意义,不能明显改善视功能.     

黄色非球面人工晶状体植入术后视觉质量的临床分析

目的 观察老年性白内障患者植入黄色非球面人工晶状体AcrySof IQ术后对比敏感度和眩光敏感度.方法 前瞻性临床对照研究.56例(56只眼)老年性白内障患者,随机分为三组,分别植入非球面人工晶状体AerySof IQ(SN60wF)及球面人工晶状体Acrysof Natural(SN60AT)、Acrysof (SA60AT).术后2月行最佳矫正视力、像差及对比敏感度检查.结果 三组患者术后最佳矫正视力≥20/30.IQ组与球面晶状体组比较,球差均显著性减少(P<0.05),高阶像差及彗差无统计学意义(P0.05).在非眩光状态下,低频时IQ组的对比敏感度(10g值)显著高于球面晶状体组(P<0.05),中频2.5deg时IQ组的对比敏感度显著高于SA60AT组(P<0.05).在眩光状态下,低频时IQ组的对比敏感度也显著高于球面晶状体组(SN60AT组:P<0.01,SA60AT组:6.3degrees P<0.01,4.0degrees P<0.05).结论 非球面人工晶状体可以减少球面像差,提高低频尤其是眩光状态下的对比敏感度从而获得更好的视觉质量.滤蓝光晶状体与普通晶状体比较对比敏感度差异无统计学意义,不能明显改善视功能.     

黄色非球面人工晶状体植入术后视觉质量的临床分析

目的 观察老年性白内障患者植入黄色非球面人工晶状体AcrySof IQ术后对比敏感度和眩光敏感度.方法 前瞻性临床对照研究.56例(56只眼)老年性白内障患者,随机分为三组,分别植入非球面人工晶状体AerySof IQ(SN60wF)及球面人工晶状体Acrysof Natural(SN60AT)、Acrysof (SA60AT).术后2月行最佳矫正视力、像差及对比敏感度检查.结果 三组患者术后最佳矫正视力≥20/30.IQ组与球面晶状体组比较,球差均显著性减少(P<0.05),高阶像差及彗差无统计学意义(P0.05).在非眩光状态下,低频时IQ组的对比敏感度(10g值)显著高于球面晶状体组(P<0.05),中频2.5deg时IQ组的对比敏感度显著高于SA60AT组(P<0.05).在眩光状态下,低频时IQ组的对比敏感度也显著高于球面晶状体组(SN60AT组:P<0.01,SA60AT组:6.3degrees P<0.01,4.0degrees P<0.05).结论 非球面人工晶状体可以减少球面像差,提高低频尤其是眩光状态下的对比敏感度从而获得更好的视觉质量.滤蓝光晶状体与普通晶状体比较对比敏感度差异无统计学意义,不能明显改善视功能.     

黄色非球面人工晶状体植入术后视觉质量的临床分析

目的 观察老年性白内障患者植入黄色非球面人工晶状体AcrySof IQ术后对比敏感度和眩光敏感度.方法 前瞻性临床对照研究.56例(56只眼)老年性白内障患者,随机分为三组,分别植入非球面人工晶状体AerySof IQ(SN60wF)及球面人工晶状体Acrysof Natural(SN60AT)、Acrysof (SA60AT).术后2月行最佳矫正视力、像差及对比敏感度检查.结果 三组患者术后最佳矫正视力≥20/30.IQ组与球面晶状体组比较,球差均显著性减少(P<0.05),高阶像差及彗差无统计学意义(P0.05).在非眩光状态下,低频时IQ组的对比敏感度(10g值)显著高于球面晶状体组(P<0.05),中频2.5deg时IQ组的对比敏感度显著高于SA60AT组(P<0.05).在眩光状态下,低频时IQ组的对比敏感度也显著高于球面晶状体组(SN60AT组:P<0.01,SA60AT组:6.3degrees P<0.01,4.0degrees P<0.05).结论 非球面人工晶状体可以减少球面像差,提高低频尤其是眩光状态下的对比敏感度从而获得更好的视觉质量.滤蓝光晶状体与普通晶状体比较对比敏感度差异无统计学意义,不能明显改善视功能.     

Effect of the AcrySof Natural intraocular lens on blue-yellow perimetry

PURPOSE: To assess the differences in blue-yellow perimetry values in patients with an AcrySof Natural intraocular lens (IOL) in 1 eye and a conventional AcrySof IOL in the fellow eye. SETTING: Cataract and glaucoma clinics of a medical school associated with a public hospital in Brazil. METHODS: Forty-six patients had bilateral phacoemulsification and implantation of an AcrySof SN60AT IOL (Alcon) in 1 eye and an MA30AC IOL (Alcon) in the fellow eye. Blue-yellow perimetry was performed in both eyes, and the data were analyzed in blinded fashion using the Mann-Whitney U test. RESULTS: No statistically significant differences were observed in short-wavelength automated perimetry (SWAP) values between the 2 IOLs. CONCLUSION: There was no interference by the yellow filter of the AcrySof Natural IOL in blue-yellow perception as determined by SWAP.     

Clinical results of the blue-light filtering AcrySof Natural foldable acrylic intraocular lens

PURPOSE: To verify the safety and effectiveness of the new AcrySof Natural (Alcon Laboratories, Inc.) blue-light filtering intraocular lens (IOL), which was designed to achieve a light-transmission spectrum similar to that of the natural human crystalline lens. SETTING: Multicenter U.S. clinical trial. METHODS: In a prospective randomized patient-masked multicenter study, 150 patients received the AcrySof Natural IOL and 147 patients received the AcrySof single-piece IOL as a control. Patients with bilateral age-related cataracts who were willing and able to wait at least 30 days between cataract procedures and had verified normal preoperative color vision were eligible for the study. Standardized surgery included a 4.0 to 5.0 mm capsulorhexis and phacoemulsification. All lenses were inserted in the capsular bag, with verification of in-the-bag placement of both haptics. In all bilateral implantation cases, the same model IOL was used in each eye. Postoperatively, contrast sensitivity and color perception were measured up to 180 days and up to 1 year (for visual acuity) after implantation. RESULTS: No statistically significant differences were discovered between the 2 patient groups in visual acuity, contrast sensitivity evaluated under mesopic and photopic conditions, or the number of patients who passed the Farnsworth D-15 color perception test. There were no lens-related adverse events in either group. CONCLUSIONS: The blue-light filtering AcrySof Natural IOL was equivalent to the conventional AcrySof lens in terms of postoperative visual performance. Additional long-term clinical studies should show whether the IOL actually provides the theoretical benefits to retinal health.     

Visual axis opacification after AcrySof intraocular lens implantation in children

PURPOSE: To evaluate visual axis opacification after AcrySof intraocular lens (IOL) (Alcon) implantation in pediatric eyes. SETTING: Iladevi Cataract and IOL Research Centre, Ahmedabad, India. METHODS: This prospective study evaluated 103 consecutive eyes of 72 children with congenital cataract. Two groups were formed based on age at surgery: Group 1, younger than 2 years, and Group 2, older than 2 years. All eyes in Group 1 (n = 37) had primary posterior continuous curvilinear capsulorhexis (PCCC) with anterior vitrectomy. In Group 2 (n = 66), management of the posterior capsule was assigned randomly to no PCCC (Group 2A, n = 37) or PCCC (Group 2B, n = 29). The PCCC group was further randomized into 2 subgroups: no vitrectomy (Group 2BN, n = 14) or vitrectomy (Group 2BV, n = 15). The primary outcome measures were visual axis opacification and the resulting need for a secondary procedure. Statistical analysis was performed using SPSS for Windows (version 11.0.1). RESULTS: The mean age of the patients was 5.2 years +/- 5.0 (SD) (range 0.2 to 16.0 years) and the mean follow-up, 2.3 +/- 0.9 years (range 1.0 to 4.0 years). Overall, 41 eyes (39.8%) developed visual axis opacification and 14 (13.6%) required secondary intervention. In Group 1, 4 eyes (10.8%) developed visual axis opacification and 3 (8.1%) had a secondary pars plana vitrectomy. In Group 2A, 31 eyes (83.8%) developed posterior capsule opacification (PCO) and 10 eyes (27.7%) had secondary intervention. Children 8 years or younger at the time of surgery developed significantly greater PCO than older children (P =.01). Five eyes (37.5%) in Group 2BN had opacification of the anterior vitreous face, 1 of which required a secondary procedure. One eye (6.7%) in Group 2BV had visual axis opacification that did not require a secondary procedure. CONCLUSIONS: AcrySof IOL implantation with appropriate management of the posterior capsule maintained a clear visual axis in 60.2% of eyes. Of the 39.8% of eyes with visual axis opacification, 13.6% had visually significant opacification and required a secondary procedure.     

Explantation of an AcrySof Natural intraocular lens because of a color vision disturbance

PURPOSE: To describe a patient who complained of color vision disturbance after implantation of a clear intraocular lens (IOL) in one eye and a yellow IOL in the other. DESIGN: Interventional case report. METHODS: A 50-year-old woman complained of binocular imbalance and "yellow vision" in her left eye after implantation of a visible blue light-filtering yellow IOL. A clear IOL had been implanted in her right eye 1 month before. She requested explantation of the yellow IOL. RESULTS: The yellow IOL was exchanged for a clear one, which resolved the unbalanced color vision. CONCLUSIONS: Patients may be intolerant of the color disturbance that results when dissimilarly colored IOLs are implanted. It is advisable to avoid this practice.     

AcrySof与PMMA人工晶体临床对比观察

目的：研究人工晶体材料与术后视力,前房炎症反应以及后囊混浊的关系。方法：１７８例（１９０眼）老年性白内障由同一位医生进行超声乳化手术,其中９０眼植入ＡｃｒｙＳｏｆ人工晶体,１００眼植入ＰＭＭＡ人工晶体,观察术后视力,前房炎症和后囊混浊的发生情况。结果：术后１天视力≥０．５者,ＡｃｒｙＳｏｆ组占８３．３３％,ＰＭＭＡ组占５６％,≥１．０者,分别为２６．７％、６％。术后３个月视力≥０．５者,ＡｃｒｙＳ     

AcrySof Natural SN60AT versus AcrySof SA60AT intraocular lens in patients with color vision defects

PURPOSE: To determine whether implantation of the AcrySof Natural intraocular lens (IOL) worsened the severity of existing color deficit in congenital partial red-green color deficient individuals (CPRG). METHODS: A prospective controlled randomized double-masked analysis of 30 consecutive patients with CPRG defect and bilateral cataracts received a Natural IOL (test group) in 1 eye and a single-piece AcrySof IOL (control group) in the other eye. Patients were tested unilaterally to detect CPRG defect using Ishihara pseudoisochromatic plates and the Farnsworth D-15 test. Plates 1 to 21 measured the Ishihara error score; plates 22 to 25 indicated severity of defect based on clarity of both numerals as partial mild/moderate (both visible), partial severe defect (only 1 visible). The D-15 test is based on number of diametrical crossings on the circular diagram; severity is graded as mild (1 crossing), moderate (2 crossings), or severe (>2 crossings). Tests were performed before and after IOL implantation at 1, 3, and 6 months. At mean follow-up of 6.13 months +/- 1.2 (SD), analysis of variance test judged the difference in error scores and cross tabulation represented change in number of diametrical crossings. RESULTS: The mean age was 62.3 +/- 8.5 years. All patients were men. Before IOL implantation, all patients had moderate CPRG defect on both tests. The Ishihara error score in the test and control groups did not reveal statistically significant differences (P = .505 and P = .119, respectively). With D-15, none of the patients in the test or control group showed >2 crossings. CONCLUSION: The implantation of AcrySof Natural IOL did not worsen the preexisting severity of color defect in CPRG individuals.     

AcrySof IQ人工晶状体植入术的临床效果观察

目的:探讨白内障超声乳化联合蓝光滤过型非球面人工晶状体植入术的临床效果。方法:年龄相关性白内障患者80例(80眼),术中植入AcrySof IQ人工晶状体为观察组,植入AcrySof Natural人工晶状体为对照组。观察术后1wk不同视标对比度的视力;使用主观像差仪检查实验组术后1mo的像差,依35项Zernike系数计算总像差及4阶像差的均方值(root means quare,RMS),比较实验组与对照组间的差异。结果:术后1wk,视标对比度为100%时,两组间差异无统计学意义(P<0.05)。对比度为25%时,两组间差异有统计学意义(P>0.05)。术后1mo,实验组与对照组总体像差的RMS均值分别为0.84±0.21μm及1.44±0.42μm,两者之间的差异有统计学意义。实验组、对照组4阶像差(球差)的RMS均值为0.58±0.18μm、1.14±0.37μm,两者之间的差异有统计学意义。结论:非球面人工晶状体可以减少术眼光学像差(尤其是球差),获得更好的低对比度视力,从而提高术后的视觉质量。     

In situ tumbling of the AcrySof intraocular lens

The small incision through which foldable acrylic intraocular lenses (IOLs) are implanted does not allow easy explantation of the lens in the event of intraoperative complications. Reversal of the IOL optic during insertion, although rare, can predispose to postoperative complications such as pupillary capture of the IOL, capsule bag distension syndrome, and refractive problems. Explanting the IOL can damage it, the cataract wound, or both. We describe a technique of in situ tumbling of the AcrySof IOL to correct reversed-optic implantation that preserves the integrity of the IOL and anterior segment structures.