双手微小切口白内障超声乳化术术后视觉质量分析

目的:行双手超声乳化白内障摘除联合1.4mm微小切口人工晶状体植入术治疗白内障与同轴超声乳化白内障手术的效果对比。方法:本文选择年龄相关性白内障160例(160眼),年龄48~82(平均69±7.8)岁。男84例,女76例。随机分为两组,每组80眼。Ⅰ组:应用白星技术(WHITE STAR),采用双手超声乳化白内障摘除联合1.4mm微小切口人工晶状体(Acri.Smart46s)植入术。Ⅱ组:应用同轴超声乳化白内障摘除术联合3.0mm切口单片式折叠人工晶状体(AMOSenser)植入。观察术后1d、1wk的术后并发症、术后视力、屈光状态情况。结果:所有患者术中前房稳定,均无切口热灼伤等并发症。术后1d及1wk视力情况:裸眼视力>0.5的术眼比例Ⅰ组分别为55.0%,81.0%,Ⅱ组分别为34.0%,50.0%。术前及术后1wk散光情况:Ⅰ组分别为0.52±0.28D和0·56±0.32D,Ⅱ组分别为0.49±0.31D和0.72±0.43D,每组术前术后散光度数比较无显著性差异(P>0.05)。两组术后1wk散光度数比较有显著性差异(P<0.05)。结论:与3.0mm切口组相比,双手微小切口白内障超声乳化术后反应轻,恢复快,散光少,视力提高快。     

同轴1.8mm微切口超声乳化白内障手术临床效果评价

目的 观察同轴1.8mm微切口超声乳化白内障手术的临床效果,并与传统同轴3.0mm小切口超声乳化手术进行比较.方法 前瞻性随机对照研究.采用随机数字表法,将实施超声乳化白内障手术的年龄相关性白内障患者89例(89只眼)随机分为2组.微切口组:同轴1.8mm微切口超声乳化白内障吸除联合人工晶状体植入手术45例(45只眼);小切口组:传统同轴3.0mm小切口超声乳化白内障吸除联合人工晶状体植入术44例(44只眼).取随访资料完整者,微切口组40例(40只眼),小切口组40例(40只眼)进行分析.分别记录两组超声乳化所用的平均超声能量(AVE)和有效超声时间(EPT),术后1d、1周、1个月和3个月随访,检查并记录视力、角膜内皮密度、中央角膜厚度,手术源性散光.采用两均数t检验和x2检验对数据进行统计学分析.结果 两组所用EPT和AVE差异无统计学意义(t=-0.149,P=0.882;t=-0.769,P=0.444).术后1d,微切口组裸眼LogMAR视力0.16±0.14优于小切口组0.23±0.12,且差异具有统计学意义(t=-2.371,P=0.020).术后1周、1个月和3个月,两组矫正视力差异均无统计学意义(t=-1.469,-1.437,-1.585;P=0.146,0.155,0.117).术后1d、1周、1个月和3个月,两组角膜内皮细胞密度及中央角膜增厚程度改变差异无统计学意义(P＞0.05).术后1d、1周、1个月及3个月,同轴微切口组手术源性散光分别为(0.62±0.28)D,(0.48±0.28)D,(0.47±0.25)D,(0.40±0.24)D;同轴小切口组手术源性散光分别为(1.27±0.65)D,(1.18±0.59)D,(1.02±0.56)D,(0.79±0.48)D,两组间差异具有统计学意义(t=-5.940,-7.247,-5.779,-4.788;P =0.000,0.000,0.000,0.000).微切口组手术源性散光于1周后明显下降(t=2.517,P=0.014)并趋于稳定,小切口组手术源性散光则于术后1个月出现明显下降(t =2.105,P=0.038).结论 同轴1.8mm微切口与传统的同轴3.0mm小切口超声乳化白内障手术相比,能有效减少手术源性散光,且散光状态更早稳定,对术后视力早期恢复具有优势.     

同轴2.2mm与2.8mm切口白内障超声乳化手术疗效评价

目的：：比较同轴微切口2.2mm与2.8mm切口白内障超声乳化手术疗效。方法：选择2014-07/2015-03我院年龄相关性白内障患者362例362眼,随机分成2.2 mm组(211例211眼)和2.8mm组(151例151眼)。术前记录裸眼视力、最佳矫正视力、屈光状态和角膜内皮计数结果。术中记录超声能量、超声乳化时间。术后记录裸眼视力、最佳矫正视力、屈光状态、角膜内皮计数。结果：两组患者术后裸眼及最佳矫正视力与术前相比均有明显提高,术后1wk时2.2mm组裸眼视力较2.8mm组提高明显,具有统计学意义(P<0.05)。2.2mm组患者在术后1wk角膜散光小于2.8mm组,两组比较有统计学差异(P<0.05)。两组患者术后角膜内皮计数都有不同程度的下降,但两组间没有统计学差异(P>0.05)。两组患者术中使用的超声能量及超声乳化时间没有统计学差异(P>0.05)。结论：2.2mm同轴微切口白内障超声乳化手术具有创伤小、恢复快、术后裸眼视力好、SIA小等优点,是一种值得推广的手术方式。     

微切口超声乳化手术在硬核白内障病例中的效果评价

目的:观察2.2mm同轴微切口超声乳化手术在硬核白内障病例中应用的临床效果,并与传统3.0mm超声乳化手术进行比较。方法:将拟实施白内障超声乳化手术的硬核(Ⅳ级及以上)患者132眼根据手术切口的大小,分为2组。微切口组:2.2mm同轴微切口超声乳化白内障吸出联合人工晶状体植入术60眼;传统切口组:3.0mm切口传统超声乳化白内障吸出联合人工晶状体植入术72眼。观察两组后囊破裂和术后角膜水肿的发生率;记录两组超声乳化所用的平均超声能量(AVE),术后1d;1,3mo随访,记录视力,手术源性散光(SIA),术后3mo检测角膜内皮细胞密度并计算丢失率。将相关数据进行统计学分析。结果:后囊破裂和术后角膜水肿的发生率微切口组为3.3%,10.0%,传统切口组为4.2%,11.1%,差异无统计学意义。微切口组和传统切口组的平均超声能量分别为65.09±20.15,69.13±15.44,差异无统计学意义。术后1d平均裸眼视力微切口组优于传统切口组,差异有统计学意义(P<0.05)。术后1,3mo最佳矫正视力两组比较差别无统计学意义(P>0.05)。术后3mo角膜内皮细胞丢失率微切口组和传统切口组分别为(16.54±10.20)%,(17.69±10.65)%,差异无统计学意义。术后1d;1,3mo微切口组手术源性散光分别为0.77±0.31,0.66±0.29,0.52±0.25D;传统切口组分别为1.41±0.73,0.98±0.61,0.82±0.35D,差异有统计学意义。结论:2.2mm同轴微切口超声乳化手术技术应用在硬核白内障病例中,具有与传统3.0mm切口相似的安全性;能有效减少手术源性散光,对术后早期视力恢复具有优势。     

不同切口白内障超声乳化术的疗效及对角膜内皮细胞的影响

目的：探究3.0mm切口白内障超声乳化术与1.8mm同轴微切口白内障超声乳化术治疗疗效及对角膜内皮细胞的影响。

方法：选择2016-12/2018-12我院住院的78例78眼年龄相关性白内障患者作为研究对象,按照术中手术切口大小不同分为标准切口组及微切口组,每组39例39眼。标准切口组患者行3.0mm标准切口白内障超声乳化人工晶状体植入术,微切口组行1.8mm同轴微切口白内障超声乳化人工晶状体植入术,比较两组患者手术疗效及角膜内皮细胞参数。

结果：标准切口组及同轴微切口组患者超声乳化时间分别为7.05±0.98、7.22±0.96s,超声乳化能量分别为(17.01±1.89)%、(16.89±1.53)%(P>0.05); 与术前比较,两组患者术后裸眼视力(LogMAR)显著降低(P<0.001),散光程度加重(P<0.001),微切口组术后1d,1wk时裸眼视力及散光程度优于标准切口组(P<0.05); 两组患者术后1d,1wk,1、3mo内皮细胞密度显著降低(P<0.05),角膜内皮细胞变异系数、中央角膜厚度增大,两组间各时间点比较均无差异(P>0.05); 两组患者均无严重并发症,标准切口组患者1眼出现一过性高眼压,药物治疗后眼压恢复正常。

结论：同轴微切口白内障超声乳化手术与标准小切口手术均对内皮细胞形态及功能有一定影响,但两者无明显差异,但同轴微切口白内障超声乳化术可缩小手术切口,降低术源性散光程度,术后恢复快,是一种相对安全的手术方式。     

1.8mm同轴微切口白内障超声乳化术对角膜散光的影响

目的：观察1.8mm同轴微切口白内障超声乳化术对角膜散光的影响,并与传统3.2mm小切口白内障超声乳化手术进行比较。

方法：年龄相关性白内障患者160例168眼,年龄50～83岁,晶状体混浊分级为Ⅱ～Ⅴ级,随机分为两组,每组84眼,分别行1.8mm同轴微切口(微切口组)和传统3.2mm小切口(常规组)白内障超声乳化手术,术后第1d; 1wk; 1mo观察随访,记录裸眼视力及散光改变,采用χ²检验和t检验对所得数据进行分析。

结果：术后第1d; 1wk; 1mo微切口组裸眼视力≥0.5者分别占79%,83%,94%,常规组裸眼视力≥0.5者分别占46%,64%,85%,两组差异有统计学意义(P<0.05); 术后第1d,微切口组平均角膜散光为0.75±0.45D,常规组角膜散光为1.12±0.55D,两组比较有显著性差异(P<0.01),术后1wk和1mo,微切口组平均角膜散光分别为0.76±0.40D和0.65±0.35D,常规组平均角膜散光为1.05±0.53D和0.85±0.43D,两组比较有统计学意义(P<0.05)。

结论：1.8mm同轴微切口白内障超声乳化术较常规超声乳化术,术源性角膜散光更小,术后视力恢复更快。     

双手法微切口白内障超声乳化手术的初步临床观察

目的 探讨双手法微切口白内障超声乳化手术的疗效.方法 将40例(40眼)年龄相关性白内障患者随机分为两组,每组20例(20眼),分别行双手法微切口白内障超声乳化摘除并人工晶体植入术及常规的白内障超声乳化摘除并人工晶体植入术.观察两组术中有效超声乳化时间、术后视力和角膜屈光状态变化等至3个月到6个月.结果 双手法组术中有效超声乳化时间(EPT)为0.9～22.1s,平均5.91±4.70s.术后1周平均散光度数为0.65±0.24D,术后1个月为0.67±0.22D,术后1个月角膜内皮细胞计数为2590.6±243个/mm2.常规组术中有效超声乳化时间为1.2～23s,平均7.1±2.30s.术后1周平均散光度为2.05±0.54D,术后1个月为1.45±0.75D.术后1个月角膜内皮细胞计数为2623±287个/mm2.两组患者术后手术性散光1天时差异有统计学意义(P＜0.01);术后1周对比仍有统计学意义(P＜0.05);1个月时无统计学意义(P＞0.05);术后矫正视力1周,1个月,3个月两组均有明显提高,比较视力变化无统计学意义(P＞0.05).结论 双手微切口超声乳化白内障吸除术可安全、有效地通过＜1.9mm的切口摘除白内障并植入人工晶体,术后早期视功能恢复优于常规白内障超声乳化手术.     

1.8mm同轴微切口白内障超声乳化术对角膜内皮及视力的影响

目的:探讨1.8mm同轴微切口白内障超声乳化术对角膜内皮损伤及术后视力恢复的影响.方法:选择2013-07/2015-07行白内障超声乳化吸除术患者120例145眼为研究对象,采用随机数字表法分为观察组60例73眼和对照组60例72眼,观察组采用1.8mm同轴微切口白内障超声乳化术,对照组采用传统3.2mm同轴切口白内障超声乳化术,比较两组患者术后裸眼视力(UCVA)、最佳矫正视力(BCVA)、切口部位角膜厚度、切口宽度、切口长度、黄斑中心凹视网膜厚度、手术源性散光、角膜内皮细胞计数、手术并发症等指标.结果:术后1wk,观察组UCVA、BCVA好于对照组,差异有统计学意义(t=3.604、7.109,P<0.05);术后1wk、1mo时,观察组切口宽度小于对照组,差异有统计学意义(t=205.3、225.2,P<0.05),切口长度大于对照组,差异有统计学意义(t=3.926、5.009,P<0.05);术后1wk,观察组黄斑中心凹视网膜厚度小于对照组,差异有统计学意义(t=2.817,P<0.05);观察组手术源性散光度小于对照组,差异有统计学意义(t=19.43、22.16,P<0.01);两组患者并发症(8.22% vs 11.11%)比较无统计学意义(x2=0.348,P>0.05).结论:1.8mm 微切口超声乳化技术有助于促进白内障患者视力恢复,可能与减轻角膜损伤、增强角膜闭合状态及降低术后术源性散光有关.     

1.8mm微切口白内障超声乳化吸除联合青光眼小梁切除术临床观察

目的：观察同轴1.8mm微切口白内障超声乳化吸除超薄人工晶状体植入联合小梁切除术治疗青光眼合并白内障的临床疗效和安全性,并与传统的同轴3.0mm 小切口超声乳化吸除折叠人工晶状体植入联合小梁切除术进行比较。
　　方法：前瞻性对照研究。收集在我院眼科行超声乳化白内障手术的青光眼合并白内障患者36例36眼随机分为2组。微切口组：同轴1.8mm微切口白内障超声乳化吸除超薄人工晶状体植入联合小梁切除手术18例18眼：小切口组：传统同轴3.0mm小切口超声乳化吸除折叠人工晶状体植入联合小梁切除术18例18眼。分别记录两组1wk;1,3mo的视力、角膜内皮细胞密度、手术源性散光、眼压、滤过泡的形成和并发症的情况。采用均数t检验和χ2检验对数据进行统计学分析。
　　结果：术后1 wk微切口组裸眼视力优于小切口组,差异有统计学意义(P<0.05)。术后1,3mo两组矫正视力差异无统计学意义(P>0.05)。术后1wk;1,3mo两组手术源性散光差异有统计学意义(P<0.05)。术后1wk两组角膜内皮细胞密度差异有统计学意义(P<0.05)。术后1,3 mo 两组角膜内皮细胞密度差异无统计学意义( P>0.05)。术后微切口组平均眼压15.26±3.12mmHg,小切口组平均眼压14.57±2.86mmHg,两组术后眼压差异无统计学意义(P>0.05),两组术后功能型滤过泡和非功能型滤过泡比较,差异无统计学意义(P>0.05)。两组术中均未出现虹膜损伤、后囊膜破裂、前房出血等并发症。
　　结论：同轴1.8mm微切口白内障超声乳化吸除超薄人工晶状体植入联合小梁切除术与传统同轴3.0mm小切口超声乳化吸除植入折叠人工晶状体联合小梁切除术相比,能有效减少手术源性散光,是一种安全、有效、便捷的治疗白内障合并青光眼的手术方法。     

不同切口同轴白内障超声乳化术的疗效比较

目的：比较2.2mm微小切口与3.0mm切口同轴白内障超声乳化术的手术效果。

方法：选择2012-01/2013-06在我院接受白内障超声乳化联合人工晶状体植入术的年龄相关性白内障患者90例90眼,随机分为两组：2.2mm切口组45例45眼,3.0mm切口组45例45眼,分别行2.2mm或3.0mm透明角膜隧道切口同轴白内障超声乳化术。术后1d; 1wk; 1,3mo随访,观察视力、角膜内皮细胞计数、中央角膜厚度、手术源性散光。

结果：术后1d,2.2mm切口组视力明显提高,差异有统计学意义(P<0.05),术后1wk; 1,3mo,两组比较无统计差异。两组角膜内皮细胞计数、中央角膜厚度在术后1d; 1wk; 1,3mo均无统计学差异(P>0.05)。两组手术源性散光在术后1d; 1wk; 1,3mo均有统计学差异(P<0.05),2.2mm切口组手术源性散光明显减小。

结论：2.2mm微小切口同轴白内障超声乳化术术后早期提高视力更明显,能明显减少手术源性散光,安全性更高。     

同轴微切口白内障超声乳化术控制术中虹膜松弛综合征的疗效分析

目的 评价同轴微切口白内障超声乳化术控制术中虹膜松弛综合征(intraoperative floppy iris syndrome,IFIS)的治疗效果.方法 前瞻性随机对照研究.2014年10月至2016年10月服用坦索罗辛≥2周的年龄相关性白内障患者80例(80眼),随机分为2组:微切口组和标准切口组,每组40例(40眼),分别通过1,8 mm微切口和2.6 mm标准透明角膜切口行同轴超声乳化白内障吸出联合人工晶状体植入术.记录并对比两组患者术中IFIS的发生率、严重程度及手术并发症,术后1d、1周、1个月的裸眼视力.结果 术后1d、1周、1个月的裸眼视力,微切口组分别为0.83±0.12、0.86±0.10、0.89±0.11,标准切口组分别为0.71 ±0.12、0.75 ±0.11、0.83 ±O.12,差异均有统计学意义(均为P＜0.05),微切口组裸眼视力均优于标准切口组.微切口组IFIS的发生率为60.0％,标准切口组IFIS的发生率为82.5％,差异有统计学意义(P＜0.05).两组术中IFIS发生的严重程度比较差异有统计学意义(P＜0.05),微切口组IFIS发生的严重程度低于标准切口组.结论 同轴微切口白内障超声乳化术对具有IFIS发生风险的白内障患者来说是一种安全有效的手术方式.     

两种不同切口同轴白内障超声乳化术的临床分析

目的：评价2.2mm同轴微切口白内障超声乳化手术与3.0mm同轴超声乳化手术的临床效果。

方法：随机将67例80眼年龄相关性白内障患者分成两组,A组40眼行2.2mm同轴微切口白内障超声乳化人工晶状体植入术; B组40眼行3.0mm同轴小切口白内障超声乳化人工晶状体植入术。并对两组有效超声乳化时间和平均超声能量、角膜内皮细胞计数、角膜水肿情况、角膜散光、术后视力及术后并发症进行比较。

结果：两组术眼的有效超声乳化时间：A组为8.18±11.22s,B组为7.82±2.12s,两组比较差异无统计学意义(P>0.05)。平均超声能量：A组为(17.25±4.22)%,B组为(17.64±4.27)%,两组比较,差异无统计学意义(P>0.05)。术后1wk两组术眼角膜内皮细胞与术前相比,内皮细胞减少,差异无统计学意义(P>0.05)。术后第1d,两组部分患者术眼角膜水肿,其中A组共有9眼,B组共有6眼,3～5d后角膜水肿减轻或消退。术后1wk两组角膜散光改变差异具有统计学意义(P<0.05),而术后1、3mo差异无统计学意义(P>0.05); A组手术前后角膜散光改变不明显,差异均无统计学意义(P>0.05); B组手术前后角膜散光改变明显,差异有统计学意义(P<0.05)。在术后1、3mo后,两组各自散光的又趋于稳定,术后1、3mo两组角膜散光改变,差异无统计学意义(P>0.05)。术后1d,1wk,1mo两组患者的裸眼视力差异均具有统计学意义(P<0.05),而术后3mo两组裸眼视力差异均无统计学意义(P>0.05)。

结论：对于软性或中等度硬核,2.2mm同轴微切口白内障与传统的3.0mm同轴小切口白内障手术相比,能有效地减少手术源性散光,而且散光状态比较稳定,有利于视力的早期恢复。     

不同切角巩膜隧道切口对白内障术后角膜散光影响研究

目的 比较与评价不同切角巩膜隧道切口对白内障术后角膜散光的影响.方法 设定从巩膜反眉状隧道切口的顶点作一条切线,该切线与术前角膜散光轴形成的夹角,称之为切角将131例(135只眼)白内障分为3组,每组45只眼,A组采用0°切角;B组采用45°切角;C组采用90°切角.手术方式均采用小切口无缝线白内障摘除术,巩膜反眉状6mm隧道切口,植入光学部直径为5.5mm的聚甲基丙烯酸甲酯(PMMA)硬性人工晶状体.随访术后1周、1月、3月裸眼视力及角膜散光数值.结果 术后3月裸眼视力A、B组与C组间差别有统计学意义(P＜0.01).术后各时间段A组角膜散光度均小于B、C二组,术后1周角膜散光度与术前比较,A组无统计学意义,B、C二组有统计学意义,术后3月角膜散光度与术前比较,A、B组无统计学意义,C组有统计学意义;A、B、C三组在术后3个月平均角膜散光度的变化差异有统计学意义(P＜0.01).结论 对于采用小切口无缝线白内障摘除术,根据术前散光轴位选择0°切角,有利于减小术后角膜散光,获得更好的裸眼视力.     

Effect of biaxial versus coaxial microincision cataract surgery on optical quality of the cornea

Context:

Visual function is determined by a combination of the cornea, which has a larger effect and internal aberrations generated by the intraocular lens and those induced by the surgery. These corneal refractive changes are related to the location and size of the corneal incision. The smaller the incision, the lower the aberrations and the better the optical quality.

Aims:

To compare the effect of uneventful coaxial versus biaxial microincision cataract surgery (MICS) on the corneal aberrations.

Settings and Design:

Retrospective interventional nonrandomized comparative case study comprised 40 eyes of 36 patients with primary senile cataract.

Subjects and Methods:

They were divided into two groups: Group I (20 eyes) had operated by biaxial MICS and Group II (20 eyes) had operated by coaxial MICS. Each group were assessed by corneal topography and wavefront analysis over 6 mm pupil size preoperatively and 1-month postoperatively.

Statistical Analysis Used:

Statistical analysis was performed using SPSS for Windows (version 17.0.1, SPSS, Inc.). The paired t-test was used to compare the mean values of corneal aberrations preoperatively and 1-month postoperatively in each group.

Results:

There was a significant increase in trefoil and quatrefoil in biaxial MICS (P = 0.063, 0.032 respectively) while other aberrations insignificantly changed. The coaxial MICS showed a significant increase in root mean square (RMS) of total high order aberrations (HOAs) (P = 0.02) and coma (0.028), but not the others. In comparison to each other, there was the insignificant difference as regards astigmatism, RMS of individual and total HOAs.

Conclusions:

Coaxial and biaxial MICS are neutral on corneal astigmatism and aberrations.     

Outcomes of coaxial microincision cataract surgery versus conventional coaxial cataract surgery

PURPOSE: To compare the outcomes of coaxial microincision cataract surgery (MICS) with those of conventional coaxial cataract surgery. SETTING: University Eye Clinic, Geneva, Switzerland. METHODS: In a prospective study, 50 eyes of 50 patients with nuclear or corticonuclear cataract (grades 2 to 4 on the Lens Opacities Classification System III) were randomly selected to have cataract extraction through a temporal clear corneal incision using 1 of 2 techniques: coaxial MICS (25 eyes) or conventional coaxial cataract surgery (25 eyes). Coaxial MICS was performed through a 1.6 mm incision and conventional coaxial cataract surgery, through a 2.8 mm incision. In all cases, a flexible hydrophobic acrylic intraocular lens (Lentis L-303, WaveLight GmbH) was implanted. Intraoperative parameters were ultrasound time, surgical time, and total volume of balanced salt solution used. The best corrected visual acuity, corneal thickness, and endothelial cell count were evaluated preoperatively and postoperatively. RESULTS: There were no relevant clinical differences between groups or perioperative complications in either group. The only statistically significant differences between the 2 groups were ultrasound time (P = .0002) and surgical time (P = .005). CONCLUSIONS: Coaxial microincision cataract surgery was a safe and effective technique. Although ultrasound and surgical time were significantly higher with coaxial MICS than with conventional coaxial cataract surgery, the postoperative results in the 2 techniques were comparable.     

同轴微切口白内障超声乳化术后角膜散光的临床观察

目的:评价2.2mm同轴微切口白内障超声乳化手术后角膜散光的变化。方法:老年性白内障患者56例78眼,将患者随机分为2组,2.2mm组38眼,3.0mm组40眼,分别行2.2mm同轴微切口白内障超声乳化联合人工晶状体(IOL)植入术及3.0mm常规白内障超声乳化联合IOL植入术,术后1,3mo评价术眼裸眼视力(uncorrected visual acuity,UCVA)、角膜散光、术源性角膜散光(surgically induced astigmatism,SIA)。结果:术后1mo,2.2mm组角膜散光为0.85±0.42D,3.0mm组角膜散光为1.18±0.37D,两组角膜散光比较有统计学差异(P<0.05)。术后3mo,2.2mm组角膜散光为0.74±0.40D,3.0mm组角膜散光为1.00±0.30D,两组角膜散光比较有统计学差异(P<0.05)。术后1mo和3mo,3.0mm组的SIA大于2.2mm组(P<0.05),3.0mm组术后1mo平均SIA大于术后3mo平均SIA(P<0.05),2.2mm组术后1mo和3mo SIA没有统计学差异(P>0.05)。术后UCVA,在术后1mo和3mo,2.2mm组均优于3.0mm组。结论:2.2mm同轴微切口白内障超声乳化手术后能产生更小的SIA和更好的UCVA。     

白内障超声乳化两种透明角膜切口比较

目的:比较白内障超声乳化大小两种透明角膜切口术后视力及散光度数的差异。方法:选择老年性白内障160例160眼分别行白内障超声乳化5.5mm透明角膜切口(A组)与3.2mm透明角膜切口(B组)植入术后1wk;1,3,6mo进行视力及散光度数比较。结果:术后1wk裸眼视力A组明显低于B组,术后1,3,6mo裸眼视力A组与B组比较无明显差异;术后1wk;1mo角膜散光度数比较A组明显高于B组,术后3,6mo角膜散光度数A组与B组比较无明显差异。结论:基层医院面向经济欠发达的农村地区开展5.5mm透明角膜切口硬质人工晶状体植入术是行之有效的。     

Long-term effects of pattern scan laser pan-retinal photocoagulation on diabetic retinopathy in Chinese patients: a retrospective study

AIM: To compare efficacy of coaxial microincisions (1.8 mm, 2.2 mm) and small incisions (3.0 mm) on phacoemulsification combined with trabeculectomy for primary angle-closure glaucoma (PACG) with cataract. METHODS: Ninety-six patients (96 eyes) with PACG and cataract were recruited and randomly divided into three groups between January 2015 and June 2017. Group A (3.0 mm incision), B (2.2 mm incision), and C (1.8 mm incision) comprised 30, 34 and 32 eyes respectively. All cases were treated with clear corneal incision phacoemulsification combined with trabeculectomy. Data including best corrected visual acuity (BCVA), corneal astigmatism, corneal endothelial cell counts (CECC), intraocular pressure (IOP), and complications were collected before the operation, and at postoperative 1d, 1 and 3mo. RESULTS: All the patients were successfully treated with surgery. The BCVA of groups B and C were significantly improved as compared to group A at postoperative 1d, 1 and 3mo (all P<0.05), but there was no difference between groups B and C at each time interval (all P>0.05). The corneal astigmatism of group A was statistically higher than that of group B (P=0.026); corneal astigmatism of group B was statistically higher than that of group C at postoperative 1d (P=0.006). The corneal astigmatism of group A at postoperative 3mo was significantly higher than that before operation (P=0.003). At postoperative 1 and 3mo, corneal astigmatism of groups B and C were significantly lower than that of group A (all P<0.05). The CECC in group B was significantly higher than that of group A (P=0.020), and CECC in group C was significantly higher than that of group B (P=0.034) at postoperative 1d. At postoperative 1 and 3mo, CECC of groups B and C were significantly higher than that of group A (all P<0.05). In each group, postoperative mean IOP at each time interval was significantly lower than preoperative IOP (all P<0.05). CONCLUSION: Coaxial microincision phacoemulsification combined with trabeculectomy for PACG with cataract has better curative efficacy in reducing postoperative corneal astigmatism and corneal endothelial cell injury than traditional small incision combined surgery, and the 1.8 mm microincision has better curative efficacy than 2.2 mm microincision in the early postoperative period.     

两种透明角膜切口白内障超声乳化术后角膜散光比较

目的 评价2.6mm与3.0mm两种透明角膜小切口超声乳化白内障吸除联合折叠式人工晶状体植入术对角膜散光的影响.方法 将69例(69只眼)白内障患者,按照2.6mm与3.0mm两种不同大小透明角膜切口随机分为A、B两组,行透明角膜小切口超声乳化白内障吸除联合折叠式人工晶状体植入术,比较两组手术性角膜散光的情况.结果 A组(3.0mm组)术后1周、术后1个月、术后3个月平均手术性角膜散光度分别为(0.6347±0.57773)D、(0.6029±0.52986)D和(0.6471±0.51902)D;B组(2.6mm组)术后1周、术后1个月、术后3个月平均手术性角膜散光度分别为(0.7286±0.62241)D、(0.6286±0.45927)D和(0.5714±0.49472)D;差异无统计学意义(P>0.05).结论 在同轴白内障超声乳化吸除联合折叠式人工晶状体植入术中,2.6mm透明角膜切口是一种安全有效的手术切口.