可调节折叠人工晶状体临床应用初步手报告

目的:通过植入一种新型的可调节折叠人工晶状体1CU,观察患者术后远近视力,观察改型人工晶状体的拟调节力.方法:对10眼单纯老年性白内障患者实施超声乳化联合囊袋内可调节折叠人工晶状体植入术,同期随机抽取10眼单纯老年性白内障行超声乳化及单焦点折叠晶状体植入术作为对照,于术前、及术后1wk;1,3mo查裸眼远近视力、矫正视力,并进行主客观验光.结果:1CU组裸眼近视力优于对照组(0.01＜P＜0.02),裸眼远视力及矫正远近视力无显著差异(P＞0.2),两组手术前后散光无显著差异(P＞O.05).结论:植入可调节折叠人工晶状体后,术眼具有一定的假晶状体调节.     

老年性白内障多焦点IOL同轴微切口植入的视觉质量观察

目的：：探讨老年性白内障多焦点人工晶状体( multiple focal intraocular lens,MIOL)同轴微切口植入的视觉效果。方法：回顾性非随机病例对照研究。选择2013-02/2014-08在湖州师范学院附属第一医院植入AcrySof ReSTOR人工晶状体的老年性白内障患者48例60眼为观察组,进行同轴微切口白内障超声乳化联合AcrySof ReSTOR人工晶状体植入。选择同期一般资料匹配的同轴微切口单焦点人工晶状体植入患者36例50眼为对照组。观察并比较两组患者术后裸眼远视力、裸眼近视力、日常用眼满意度。结果：两组患者人工晶状体均成功植入。观察组术后3 mo裸眼远视力为0.75±0.25,裸眼近视力为0.70±0.18,日常用眼满意度为96%。对照组术后3 mo裸眼远视力为0.79±0.36,裸眼近视力为0.31±0.11,日常用眼满意度为75%。两组患者术后3 mo裸眼远视力比较,无统计学差异(P>0.05),术后3mo裸眼近视力、日常用眼满意度比较,有统计学差异(P<0.05)。结论：多焦点人工晶状体术后3 mo裸眼近视力、日常用眼满意度优于单焦点人工晶状体。两组患者术后3 mo裸眼远视力结果无差异。     

可调节折叠人工晶状体临床应用初步报告

目的：通过植入一种新型的可调节折叠人工晶状体1CU，观察患者术后远近视力，观察改型人工晶状体的拟调节力。方法：对10眼单纯老年性白内障患者实施超声乳化联合囊袋内可调节折叠人工晶状体植入术，同期随机抽取10眼单纯老年性白内障行超声乳化及单焦点折叠晶状体植入术作为对照，于术前、及术后1wk；1，3mo查裸眼远近视力、矫正视力，并进行主客观验光。结果：1CU组裸眼近视力优于对照组（0．01〈P〈0．02），裸眼远视力及矫正远近视力无显著差异（P，0．2），两组手术前后散光无显著差异（P〉0．05）。结论：植入可调节折叠人工晶状体后，术眼具有一定的假晶状体调节。     

IOL Master指导下行多焦点人工晶状体植入术后的屈光状态研究

目的:研究非接触光学相关生物测量仪(IOL Master)指导下行白内障超声乳化联合衍射型非球面多焦点人工晶状体植入术后的患眼屈光状态。方法:选取我院单纯性老年性白内障患者68例84眼,术前常规检查,以IOL Master确定人工晶状体度数,行白内障超声乳化术后联合植入Tecnis AMO00衍射型非球面多焦点人工晶状体。术后3mo随访,记录患者术后视力,以综合验光仪检查患者术后屈光状态并记录。结果:近视36眼,远视48眼,球镜和柱镜度数均在-0.50～+0.50D之间,无明显屈光不正。术后裸眼远视力≥0.8者64眼(76%),最佳矫正远视力≥0.8者77眼(92%),裸眼近视力≥0.8者58眼(69%),最佳矫正近视力≥0.8者74眼(88%),中间距离视力≥0.8者58眼(69%)。结论:衍射型非球面多焦人工晶状体能提供良好的全程视力,在IOLMaster指导下更能精确选择度数,患者术后无明显屈光不正,视觉满意度高。     

ReSTOR +3D多焦点人工晶状体植入的初步观察

目的:评价ReSTOR +3D渐进衍射型多焦点人工晶状体植入术后临床效果。方法:收集我院2009-06/2009-11老年性白内障行白内障超声乳化联合AcrysofReSTOR +3D人工晶状体植入手术患者32例48眼。术后连续随访3～6(平均4±1.5)mo。观察术后末次随访时裸眼远、中、近视力及最佳矫正远、中,近视力、脱镜率、人工晶状体的位置。结果:术后裸眼远视力为0.85±0.17,术后裸眼中距离视力为0.65±0.15,术后裸眼近视力为0.64±0.13,术后最佳矫正远视力为0.96±0.14,术后最佳矫正中距离视力为0.69±0.17,术后最佳矫正近视力为0.77±0.15。脱镜率为84%。裂隙灯检查见人工晶状体居中,无倾斜。随访期间未发现后发性白内障。结论:ReSTOR+3D衍射型多焦点人工晶状体能为患者提供满意的全程视力。     

非球面散光矫正型多焦点人工晶状体在白内障中的临床观察

目的:通过对非球面矫正型多焦点人工晶状体与非球面人工晶状体的比较,探讨白内障超声乳化联合非球面散光矫正型人工晶状体植入术后患者的远近视力、剩余散光、视远脱镜率、视近脱镜率、视觉质量和患者满意度等情况.方法:选取2014-02/2016-06在我院确诊为年龄相关性白内障的患者46例48眼,实行白内障超声乳化摘除联合人工晶状体植入术,分别植入AcrySof IQ ReSTOR Toric人工晶状体23例24眼作为试验组;AcrySof IQ 人工晶状体23例24眼作为对照组.术后随访6mo,观察两组患者术后裸眼远视力(UCDVA)、最佳矫正远视力(BCDVA)、裸眼近视力(UCNVA)、最佳矫正近视力(BCNVA)、剩余散光和术后患者视远脱镜率、视近脱镜率、患者对手术疗效的满意度.结果:术后1、3、6mo两组患者最佳矫正远视力和最佳矫正近视力无统计学差异(P>0.05),而裸眼远视力、裸眼近视力均有统计学差异(P<0.05).两组患者术后1wk,1、3、6mo的剩余散光差异有统计学意义(P<0.05),术后6mo时两组患者对疗效满意度差异有统计学意义(P<0.05);术后6mo视近视远脱镜率,试验组明显高于对照组,差异有统计学意义(P<0.05).结论:非球面散光矫正型人工晶状体具有良好的近附加和散光矫正,可为患者提高良好的裸眼远视力和裸眼近视力,明显提高患者术后的脱镜率和对疗效的满意度,是白内障术后患者尤其是散光伴有明显视近阅读需求患者的福音.     

新型衍射型非球面多焦点人工晶状体的临床应用

目的比较白内障超声乳化联合植入新型衍射型非球面多焦点人工晶状体Tecnis AMO00及非球面单焦点人工晶状体Tecnis的临床效果。方法选择老年性白内障患者,根据植入的晶状体不同分为2组:多焦点组46例62眼,植入Tecnis AMO00新型衍射型非球面多焦点人工晶状体,单焦点组42例68眼,植入Tecnis非球面单焦点人工晶状体。术后1个月和3个月随访,观察术后裸眼远视力、裸眼近视力、最佳矫正远视力、最佳矫正近视力及中间距离视力,术后3个月进行角膜内皮计数及角膜地形图检查,问卷调查了解视觉症状和视觉满意度。结果术后1个月及3个月两组间患者裸眼远视力、最佳矫正远视力和最佳矫正近视力均无显著差异。术后1个月及3个月多焦点组裸眼近视力分别为0.65±0.27和0.68±0.28,中间距离视力分别为0.64±0.22和0.67±0.25,相比单焦点组术后1个月及3个月的裸眼近视力(分别为0.28±0.26和0.30±0.25)和中间距离视力(分别为0.27±0.25和0.29±0.27),具有明显优越性,差异均有统计学意义(均为P<0.05)。两组患者术前、术后的散光状态差异均有统计学意义(均为P<0.01),术前、术后的角膜内皮细胞计数差异亦均有统计学意义(均为P<0.01),两组之间术后角膜内皮细胞丢失率差异无统计学意义(P>0.05)。多焦点组脱镜率(96.77%)明显高于单焦点组(25.00%),差异有统计学意义(P<0.01)。多焦点组4例患者诉轻度光晕、眩光,但在可以忍受范围内。结论新型衍射型非球面多焦点人工晶状体Tecnis AMO00能提供良好的全程视力,有效降低患者对老视镜的依赖,提高白内障患者术后的视觉质量。     

Akreos MI60型人工晶状体眼伪调节的研究

目的:研究1.8mm微切口超声乳化白内障摘除术植入博士伦四点支撑板状襻Akreos MI60人工晶状体眼的伪调节力。方法:回顾性系列病例研究。选取我院单纯年龄相关性白内障行1.8mm微切口超声乳化联合博士伦Akreos MI60人工晶状体植入术的患者19例22眼,在术后6mo进行随访,观察其远视力、最佳矫正远视力,35cm近视力、最佳矫正近视力;离焦法测定人工晶状体眼伪调节力(主观法);在药物(20g/L毛果芸香碱)诱导下用UBM测量前房深度的变化并计算其伪调节力(客观法)。结果:术后6mo,裸眼远视力为0.81±0.11,最佳矫正远视力为0.91±0.09;35cm近视力为0.62±0.10,最佳矫正近视力为0.85±0.11;调节幅度离焦法测定人工晶状体眼伪调节力为2.55±0.24D,前房深度测量法(ACD法)为0.72±0.13D。结论:对于没有明显屈光不正的患者,博士伦AkreosMI60人工晶状体眼术后早期具有一定的伪调节力,主观法测得调节幅度大于客观法。     

透明角膜切口白内障超声乳化摘除术临床观察

目的:探讨白内障超声乳化摘除联合注入式折叠人工晶状体植入术的效果。方法:对382例475眼行透明角膜切口白内障超声乳化摘除联合注入式折叠人工晶状体植入术的术后视力、并发症及安全性进行研究。结果:患者382例475眼手术顺利,术后1mo视力<0.3者10眼,均为眼底病变,视力未提高,>0.3者56眼,视力>0.5者409眼。患者满意,未出现严重眼部及全身并发症。结论:超声乳化白内障摘除联合注入式折叠人工晶状体植入术,术后视力恢复快,是治疗白内障安全有效的手术方法。     

超声乳化人工晶状体植入术治疗高度近视白内障疗效观察

目的:探讨高度近视白内障表面麻醉下晶状体超声乳化吸除人工晶状体植入术的疗效。方法:回顾性病例系列研究,对60例88眼高度近视白内障采用表面麻醉透明角膜切口晶状体超声乳化折叠人工晶状体植入术后随访1～3mo。结果:患者88眼均顺利完成手术植入丙烯酸酯折叠人工晶状体,植入球面人工晶状体46眼,非球面晶状体39眼,多焦晶状体3眼。度数范围:-6.00～+13.00D。术后视力均有不同程度提高,其中矫正视力≥0.5者54眼(61%),≥0.3者73眼(83%),≥0.05者83眼(94%)。术中术后无严重并发症发生。结论:对高度近视白内障采用表面麻醉下透明角膜切口晶状体超声乳化折叠式人工晶状体植入术是安全有效的,是这一高危人群的理想术式。     

A comparative clinical study of the visual results between three types of multifocal lenses

Purpose

To compare the patients’ visual results after bilateral implantation of the multifocal intraocular lenses (MIOLs): ReZoom (NXG1, Abbott Medical Optics, Abbott Park, IL, USA), Acrysof ReSTOR (SA60D3, Alcon Laboratories, Fort Worth, TX, USA) and Tecnis MF (ZM900, Abbott Medical Optics).

Materials and methods

A prospective, nonrandomized, comparative trial of 30 patients (60 eyes) aged 46–71 (mean age 56.3?±?5.96) divided into three equal groups with implanted bilaterally multifocal lenses: ReZoom IOL, Acrysof ReSTOR IOL and Tecnis MF IOL. The patient selection criteria included no other eye disease besides cataract, and corneal astigmatism of 1.5 diopters or less. In each case, the patients were scheduled to have standard phacoemulsification surgery with IOL implantation into the bag. The postoperative target was emmetropia. The mean follow-up was 6 months in all eyes. The following parameters were assessed/carried out: slit-lamp examination, uncorrected and best spectacle-corrected far and near visual acuity, autorefractometry, intraocular pressure, contrast sensitivity and subjective satisfaction with vision using the VF-14 survey.

Results

After surgery, all eyes were within ±2.0D of target refraction. The mean uncorrected distance visual acuity improved in all cases. The postoperative BCDVA was better than 20/30 at the sixth month in all eyes. Six months postoperatively, the mean uncorrected distance visual acuity (UCDVA) ± standard error (SE) in the ReZoom, ReSTOR and Tecnis MF groups was 0.11?±?0.01, 0.17?±?0.02 and 0.14?±?0.02 (LogMAR) respectively. All results were significantly better compared to preoperative values (p?<?0.001) but did not differ between the study groups (p?>?0.05). At the final visit, 75% of eyes in the ReZoom group achieved J1 (Jaeger standard) in comparison to 85% in the ReSTOR and Tecnis MF groups. Eighty percent of patients with bilaterally implanted ReSTOR and Tecnis MF IOL were spectacle-independent, in comparison to 70% with implanted ReZoom IOL. Thirty percent of patients with implanted Rezoom and Acrysof Restor IOL and 20% with implanted Tecnis multifocal IOL reported little or moderate halo and glare. The patients’ satisfaction after the procedure was excellent; the scoring on the VF-14 survey ranged from 70–100%, with an average of 93%. No patient was dissatisfied with the results of the surgery.

Conclusions

The implantation of tested multifocal intraocular lenses provides good near and distance visual acuity. We did not observe any statistically significant differences between the tested multifocal intraocular lenses with regard to best-corrected distance visual acuity, presence of glare and halo, as well as satisfaction with vision.     

两种TECNIS多焦点人工晶状体不同组合方式植入术后视力对比

目的：对比双眼均植入Tecnis Symfony ZXR00(ZXR00)、双眼分别植入ZXR00和Tecnis ZMB00(ZMB00)以及双眼均植入ZMB00患者术后视力、视觉质量及患者满意度。

方法：回顾性病例对照研究。收集2020-08/2021-12行白内障超声乳化吸除联合人工晶状体(IOL)植入的白内障患者117例(234眼),根据IOL不同分为三组：37例(74眼)双眼植入ZMB00为MM组; 44例(88眼)双眼分别植入ZXR00和ZMB00为MR组; 36例(72眼)双眼均植入ZXR00为RR组。观察三组患者术后3 mo裸眼远视力(UDVA,5 m)、裸眼中视力(UIVA,80 cm)、裸眼近视力(UNVA,40 cm)、矫正远视力(CDVA)、离焦曲线、立体视及VF-14、QoV视觉质量评分表问卷调查。

结果：MM和MR组UNVA优于RR组(P<0.05); 而MM组与MR组不具有统计学差异。RR组UIVA最优。三组的UDVA、CDVA和立体视均不具有统计学意义(P>0.05)。 术后3 mo时MR、MM、RR组40 cm近立体视锐度分别为107.27±80.53、105.67±83.79、108.69±97.66(20-400)弧秒(P>0.05)。MR、MM、RR组的满意度均达到90%以上。

结论：三组术后均具有良好的远、中、近视力和双眼近立体视。其中,MR组具有更优异的全程视力。三组患者术后满意度均较高,可以根据患者的不同需求选择合适的多焦点人工晶状体。     

折叠人工晶状体无缝线固定悬挂术临床效果观察

目的:观察后房型三体折叠式丙烯酸非球面人工晶状体经透明角膜切口植入并巩膜隧道无缝线固定悬挂术后的临床效果。方法:观察后房型三体折叠式非球面人工晶状体经透明角膜切口植入并巩膜隧道无缝线固定悬挂术的临床效果。对视力、超声生物显微镜(UBM)显示的晶状体位置、眼内反应等参数进行术前术后对比。结果:随访3～12(平均6.5)mo,术后矫正视力:1.0～1.5者8眼(33.3%),0.5～0.9者13眼(54.2%),0.1～0.4者3眼(12.5%),手术后裸眼及矫正视力较术前均有显著性提高(P<0.01)。UBM显示人工晶状体体部平面与角膜内皮间距,和睫状突平面与角膜内皮间距之间差异无统计学意义(P>0.05),与囊袋内植入人工晶状体者位置相似,术后未出现明显睫状体脱离、锯齿缘离断或虹膜根部形态异常等。24例人工晶状体悬挂植入术均手术顺利,无严重眼内感染或炎症等,未出现睫状体脱离或视网膜脱离等并发症,少数出现短暂眼内压增高。结论:选择3.0～6.0mm透明角膜切口行后房型三体折叠式人工晶状体植入并巩膜隧道无缝线固定悬挂术,是白内障超声乳化吸除术中弥补手术失误,治疗外伤性晶状体脱位或白内障,治疗先天性晶状体半脱位等疾病,提高视力的安全有效方法,远期疗效有待长期随访观察。     

Comparison of an aspheric monofocal intraocular lens with the new generation monofocal lens using defocus curve

Purpose:The aim of this study was to compare the visual outcomes of two monofocal intraocular lenses (IOLs), with emphasis on the defocus curve.Methods:A total of 116 consecutive eyes with cataract, undergoing phacoemulsification with IOL implantation were included in the observational case series, and divided into two groups. 71 eyes were implanted with Tecnis Eyhance and 45 with Tecnis 1 monofocal IOL. Eyes with ocular comorbidities, previous ocular surgeries and corneal astigmatism >1 Diopters (D) were excluded from the study. Complete ophthalmic evaluation including uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), uncorrected intermediate visual acuity (UIVA), corrected intermediate visual acuity (CIVA), uncorrected visual acuity (UNVA), corrected near visual acuity (CNVA) was noted and defocus levels ranging from - 4.00 D to + 1.00 D were plotted postoperatively in both groups.Results:Uncorrected intermediate visual acuity (UIVA) and uncorrected near visual acuity (UNVA) was significantly better in Tecnis Eyhance group compared to Tecnis 1 monofocal. Both the IOLs have similar performance for distance vision but visual acuity at intermediate and near is significantly better with Tecnis Eyhance compared to Tecnis 1 piece IOL.Conclusion:Tecnis Eyhance IOL with its better defocus curve, not only provides good distance, but intermediate vision as well. With significantly better visual acuity across the range of near and intermediate vision, Tecnis Eyhance IOL can prove to be a viable and reasonable option for patients who are more dependent on intermediate vision in daily activities.     

Improving quality of vision with an anterior surface modified prolate intraocular lens: A prospective clinical trial

AIM: To compare the optical performance of the anterior surface modified prolate Tecnis Z9000 IOL with the standard 911A IOL in terms of contrast sensitivity outcomes. · METHODS: The Tecnis Z9000 silicone IOL shares the same basic characteristics with the 911A IOL including a 12.0mm overall diameter, 3-piece equiconvex 6.0mm optic and angulated cap C polyvinylidene fluoride haptics. This is a randomized prospective study that involved ten consecutive patients (20 eyes) with bilateral cataracts. Each patient underwent phacoemulsification and received randomly the Tecnis Z9000 IOL in one eye and the control (911A IOL) in the fellow eye within 6 weeks period of one another. Contrast sensitivity was measured after six postoperative weeks. The collected data were analyzed through using Mann Whitney U test. · RESULTS: The mean pre-operative best spectacle corrected Snellen visual acuity in the eyes that were randomly selected to receive the Tecnis IOL was 6/8.5 (0.70) and in the eye selected to receive the 911A IOL was 6/9.4(0.64). Postoperatively all 20 eyes achieved best corrected Snellen visual acuity of 6/6 (1.0). Postoperative contrast sensitivity testing showed statistically significant differences (P <0.05) between the two IOLs at 12 and 18 cpd under photopic, at 1.5 and 3 cpd under mesopic, and at 1.5 and 3 cpd under mesopic with glare conditions. · CONCLUSION: The Tecnis Z9000 IOL proved to have statistically significant superior contrast sensitivity to the 911A IOL at high spatial frequencies under photopic conditions and at low spatial frequencies under mesopic and mesopic with glare conditions.     

Spherical aberration, visual performance and pseudoaccommodation of eyes implanted with different aspheric intraocular lens

Purpose: To compare spherical aberration, visual performance and pseudoaccommodation in pseudophakic eyes implanted with aspheric intraocular lenses (IOLs) of Tecnis Z9001 with negative spherical aberration (AMO Inc.), aspheric aberration‐free IOLs of Akreos AO (Bausch & Lomb Inc.) and spherical IOLs of KS‐1 (Cannon Staar Inc.). Methods: A total of 196 patients presenting for cataract surgery were randomly assigned to receive one of three types of IOLs in one eye. Spherical aberration, best‐corrected far visual acuity (BCFVA), distance corrected near visual acuity (DCNVA), contrast sensitivity, glare sensitivity and pseudoaccommodation were measured and compared 3 months postoperatively. Results: At 3 months postoperatively, the mean spherical aberration Z(4,0) for 5 mm pupil size in eyes with Tecnis Z9001 IOLs, Akreos AO IOLs, and KS‐1 IOLs were 0.022 ± 0.071 µm, 0.141 ± 0.070 µm and 0.210 ± 0.108 µm, respectively (P < 0.001), and significant difference was also found in two aspheric IOLs (P < 0.001). Compared with spherical KS‐1 IOLs, Tecnis Z9001 IOLs significantly improved the contrast sensitivity at 4.0°, 2.5° visual angle and glare sensitivity at 4.0°, 2.5°, 2.0°, 1.6° visual angle, Akreos AO IOLs significantly improved contrast sensitivity at 2.5° and glare sensitivity at 4.0°, 2.5°, 2.0°, but no difference statistically significance were found between two aspheric IOLs at any visual angle. In addition, there was no significant difference among three IOLs regarding BCFVA, DCNVA and pseudoaccommodation. Conclusions: All the studied IOLs can provide good visual acuity. Compared with spherical IOLs, both aspheric IOLs can significantly decrease spherical aberration and improve visual performance without the reduction of pseudoaccommodation amplitude.     

Visual outcome and optical quality after bilateral implantation of aspheric diffractive multifocal, aspheric monofocal and spherical monofocal intraocular lenses:a prospective comparison

AIM:To evaluate the visual function after bilateral implantation of aspheric diffractive multifocal Tecnis ZMA00, aspheric monofocal ZA9003 versus spherical monofocal Akreos Adapt intraocular lenses (IOLs).METHODS:Tecnis ZMA00, Tecnis ZA9003 or Akreos Adapt IOLs were bilaterally implanted in 180 eyes from 90 patients. The following parameters were assessed 3 months postoperatively:monocular and binocular uncorrected visual acuity (UCVA) and distance-corrected visual acuity (DCVA) for distance, intermediate and near, spherical aberration (SA), contrast and glare sensitivity, near point refractive power, uncorrected and best-corrected near stereoscopic acuity (NSA). Patient satisfaction was assessed by a questionnaire.RESULTS:Three months postoperatively, the monocular and binocular UCVA and DCVA at near of Tecnis ZMA00 were significantly better than other two groups. The mean SA for 5.0mm optical zone in Tecnis ZMA00 and Tecnis ZA9003 was significantly lower than that in Akreos Adapt. Mean contrast sensitivity and glare sensitivity were better for Tecnis ZA9003 group than for other two groups. Patients with Tecnis ZMA00 had higher monocular and binocular near point refractive power and uncorrected NSA than monofocal groups. The patients in Tecnis ZMA00 had higher mean values for halo compared with other two groups.CONCLUSION:Tecnis ZMA00 provided better near VA and uncorrected NSA and higher near point refractive power than monofocal IOLs and patients were spectacle independent. The IOLs with Tecnis aspheric design improved contrast and glare sensitivity. Patients with Tecnis ZMA00 reported more disturbances on visual phenomena of halo.     

Foldable Lens Explantation and Exchange：The Reason and Solution

Objective: To report the explantation and exchange of Hydrophilic Acrylic foldableintraocular lens (IOL) on 14 patients who had visual disturbances caused by the changeof transparence on optic.Methods: Sixteen Hydrophilic Acrylic foldable intraocular lenses from 14 patients whopresented with decreased visual acuity from 6 months to 1 year after normalphacoemulsification and IOL implantation associated with extensive transparent changeon optic of the lens. The lenses were explanted with the bisection technique. All the eyeswere reinserted with Acrysof foldable lenses.Results: Sixteen lenses were removed successfully and exchanged with the new lens inthe capsule. The posterior capsular rupture and vitreous loss were found in the first twocases. One of them had the zonulysis due to the radial tear of the anterior capsule duringthe enlargement of the capsular opening. The anterior vitrectomy was performed with IOLfixed on the ciliary sulcus. The visual acuity of all the patients improved obvi     

白内障超声乳化术三种人工晶状体植入疗效分析

目的 观察PMMA晶状体及三片式、单片式Acrysof晶状体植入后视力恢复、散光度、角膜内皮细胞密度变化、术后后囊膜混浊发生率及Nd：YAG激光切开率。方法 对PMMA晶状体组55只眼、三片式、单片式Acrysof晶状体各52只眼进行回顾性研究，将术后各期视力、散光度、角膜内皮细胞密度变化和后囊膜混浊发生率及激光切开率进行对比研究。结果 折叠式人工晶状体组比PMMA晶状体组视力恢复快。1月后三者间没有差异。角膜散光PMMA晶状体组6个月与术前无差异，折叠式人工晶状体组1个月与术前比较即无差异。术后角膜内皮细胞密度三组之间无差异。术后6月后囊膜混浊发生率及Nd：YAG激光后囊膜切开率，折叠式人工晶状体组与PMMA晶状体差异有显著意义。结论 三种不同人工晶状体植入后均可获得满意的效果，Acrysof晶状体术后后发障明显低于PMMA晶状体。     

CeeOn 911A硅凝胶折叠人工晶体植入术的临床观察

目的：观察分析CeeOn911A硅凝胶折叠人工晶体植入术的临床效果。寻找一种更容易植入眼内,效果更好的折叠人工晶体。方法：对50例（54眼）的白内障患者,行颞侧透明角膜切口的超声乳化白内障摘除术联合CeeOn911A折叠人工晶体植入术,观察其术中并发症,术后视力,人工晶体在囊袋内的偏移度及后囊膜的混浊与皱折程度。结果：54眼术中均能顺利地将人工晶体植入晶体囊袋内,术后裸眼视力≥0．5者46眼（85．2％）,术后观察所有人工晶体均能位于囊袋内,未发生人工晶体的偏移,后囊膜的混浊与皱褶。结论：CeeOn911A折叠人工晶体术中容易植入眼内,术后在眼内的中心定位性能好,为防止后发性白内障的发生提供有利条件。