简介:目的探讨基层医院白内障手术从现代囊外摘除术(ECCE)到超声乳化术(phacoemulsification)的过渡.方法对有EccE手术经验的医生,通过130目艮动物实验后,进行100例老年性白内障Phaco带教培训.结果术后1天视力≥0.3者94%,≥0.5者83%;术后3月视力≥0.3者96%,≥0.5者90%,人工晶体植入率100%,无角膜失代偿、核坠落、视网膜脱落等严重并发症,实现了从ECCE到Phaco的安全过渡.结论基层医生只要以严谨、积极的科学态度进行学习,有扎实的显微手术基础,严格选择病例,配以良好的设备,强调规范化操作,同样能成功地完成转化过程,开展较高质量的白内障超声乳化手术.
简介:目的探讨基层医院小切口非超声乳化白内障囊外摘除联合人工晶体植人手术技巧。方法我院2005年8月至2014年5月采用小切口非超声乳化白内障囊外摘除联合人工晶体植入257例(263眼),对其术后视力及术中、术后并发症进行临床分析。结果术后出院视力均有不同程度的提高,视力低于0.1者6只眼,占2%,0.1~0.3者19只眼,占7%,0.3~0.5者84只眼,占32%,0.5~0.8者115只眼,占44%,0.8以上者39只眼,占15%。7-10天复诊视力进一步提高。结论小切口非超声乳化白内障囊外摘除联合人工晶体植入手术疗效显著,实用性强,易于操作,成本低,非常适合在基层医院推广。
简介:目的探讨基层医院开展高龄老人白内障超声乳化吸除术应注意的问题,手术难点及处理对策,旨在减少手术并发症,提高成功率。方法对109只眼,75—84岁老人白内障超声乳化吸除术作回顾性总结和分析。结果术后一周视力0.5以上68只眼,占63%。视力0.1—0.3者14只眼,占13%。0.3—0.5者23只眼,占21%。4只眼未脱盲,占3%术中并发症为后囊破裂,未发生核坠入玻璃体,无严重全是并发症发生,术后并发症主要是角膜水肿,未发生大泡性角膜炎。结论本组病例疗效满意。无严重并发症发生。手术成功的关键是要充分了解高龄白内障老人眼部及全身生理特点,对各种手术并发症的原因和表现有清醒的认识,具备扎实的手术操作技巧。
简介:AIM:Todescribethecharacteristicsofmodulationtransferfunction(MTF)ofanteriorcornealsurface,andobtainthethenormalreferencerangeofMTFatdifferentspatialfrequenciesandopticalzonesoftheanteriorcornealsurfaceinmyopes.·METHODS:Fourhundredeyesfrom200patientswereexaminedunderSIRIUScornealtopographysystem.PhoenisanalysissoftwarewasappliedtosimulatetheMTFcurvesofanteriorcornealsurfaceatverticalandhorizontalmeridiansatthe3,4,5,6,7mmopticalzonesofcornea.TheMTFvaluesatspatialfrequenciesof5,10,15,20,25,30,35,40,45,50,55and60cycles/degree(c/d)wereselected.·RESULTS:TheMTFcurveofanteriorcornealsurfacedecreasedrapidlyfromlowtointermediatefrequency(0-15cpd)atvariousopticalzonesofcornea,thevaluedecreasedto0slowlyathigherfrequency(>15cpd).Withtheincreaseoftheopticalzonesofcornea,MTFcurvedecreasedgradually.3)Intherangeof3mm-6mmopticalzonesofthecornea,theMTFvaluesmeasuredathorizontalmeridianweregreaterthanthecorrespondingvaluesathorizontalmeridianofeachspatialfrequency,thedifferencewasstatisticallysignificant(P<0.05).At7mmopticalzonesofcornea,theMTFvaluesmeasuredathorizontalmeridianwerelessthanthecorrespondingvaluesatverticalmeridianat10-60spatialfrequencies(cpd),andthedifferencewasstatisticallysignificantin25,30,35,40,45,50cpd(P<0.05).·CONCLUSION:MTFcanbeusedtodescribetheimagingqualityofopticalsystemsatanteriorcornealsurfaceobjectivelyindetail.