简介:AIM:Todefinetheultrasonographicstructureofnormallowereyelidanatomiccompartmentsandtheirspacialrelationshipindynamicmotion.METHODS:Highresolutionultrasound(15MHz)wasperformedonthelowereyelidsof7normalsubjects.Movementsofthelowereyelidanditscompartmentswerevisualizedwithultrasound.Inaddition,themaximalexcursionareaofthelowereyelidfatcompartmentsandretractormotionswasmeasuredbeforeandaftermotion.RESULTS:Theorbicularismusclecouldbeseenasanecholucentstructurebetweenthedermisandtheechodencefatpads.Lowereyelidfatpadseemstobedividedinto2compartmentsasrangeofmotionanddirectionofmovementofeachofthemvaries.Itseemsthatthesecompartmentshavealsodifferentbehavior.Themeasuredprofileareaofthevisiblenormallowereyelidfatpadsduringmovementofglobefromup-gazetodown-gazedecreasedby50%.Orderofmovementoflowereyelidstructuresseemstobeasfollows:afterglobemovementfistweseeretractormovement,anteriororbitalfatpad,thenskinandseptum,andfinallymovementofinferiorfatpad.CONCLUSION:Ultrasoundrepresentsanoninvasivetoolforthevisualizationoflowereyelidmorphology.Expandingitsapplicationcouldhelpusunderstandthecompartmentalchangesinphysiologicaleyelidmovement,inaginganddiseasedstudypopulations,aswellasassessoperativeoutcomes.
简介:目的:比较雷珠单抗和光动力疗法(photodynamictherapy,PDT)治疗湿性年龄相关性黄斑变性(age-relatedmaculardegeneration,AMD)的临床疗效。方法:回顾性分析23例PDT治疗的湿性AMD患者和23例予雷珠单抗玻璃体腔内注射治疗的湿性AMD患者的资料,比较两组在治疗后1,3,6mo的视力、OCT及FFA变化情况。结果:两组患者术后1,3mo视力均得到明显提高,两组在统计学意义上无显著差异,雷珠单抗组有2例(9%)患者在治疗后6mo出现视力回降现象,PDT组患者在术后3mo及术后6mo视力变化稳定。结论:雷珠单抗和PDT治疗湿性AMD,均能有效控制湿性AMD患者病情发展并能改善患者视力,两种疗法疗效的比较在短期内无统计学意义,但是术后6mo,PDT的稳定性优于雷珠单抗。
简介:目的:使用Pentacam三维眼前段分析仪比较高度近视眼与正常人(正视眼)中央前房深度(centralanteriorchamberdepth,CACD)和前房角(anteriorchamberangle,ACA)两项前房参数差异,进一步了解高度近视眼的解剖学特点。方法:收集2010-10/2011-06在我院门诊就诊的正视眼82例,收集同期我院门诊与准分子激光中心就诊的高度近视眼68例,采用Pentacam三维眼前段分析仪测量CACD和ACA。对高度近视组与正视眼组的前房参数值进行两样本t检验,比较两组间参数有无差异。结果:Pentacam三维眼前段分析仪测得正常人CACD平均值为3.02±0.47mm,ACA平均值为33.26°±6.20°。高度近视眼的CACD平均值为3.24±0.38mm,ACA的平均值为39.55°±6.68°。高度近视眼与正视眼的两项前房参数值均存在显著性差异(均P〈0.05)。结论:Pentacam三维眼前段分析仪测量前房参数,高度近视眼与正视眼相比中央前房深度深、前房角宽。
简介:目的探讨鼻内镜辅助下颈前小切121甲状腺手术的疗效、临床经验和手术注意事项,并与传统手术进行比较。方法我科术前确诊的单发甲状腺腺瘤患者26例,肿瘤最大直径〈4.0cm,均行鼻内镜辅助颈前小切口腺叶切除术,观察疗效,并与同期具有可比性的30例经传统手术治疗的患者资料进行比较。结果2组患者的肿块均完整切除,切口均Ⅰ期愈合。术后无声音嘶哑、呛咳、继发血肿等并发症。无手术死亡病例。鼻内镜辅助下颈前小切口组的手术时间较对照组长(t=9.139,P〈0.05),术中出血量较对照组大(t=12.648,P〈0.05)。小切口组患者的瘢痕长度、患者满意度、住院天数明显优于对照组,差异有统计学意义(P〈0.05)。结论鼻内镜辅助下颈前小切口甲状腺手术安全、可靠,能有效避免神经、血管损伤,具有并发症少、微创、美容的优点,值得临床推广。
简介:目的:本文旨在通过对比白内障患者术后进行的计算机随机点立体视图和TNO立体视觉检查图的检查结果,评价计算机随机点立体视图的实用性及可行性。方法:选择2011-01/06于我院行双眼白内障超声乳化摘除术,双眼间隔1d,并且联合行折叠式人工晶状体植入术的受试者78例作为研究对象,手术均由同一熟练的超声乳化手术医师完成。患者术后定期随访,于术后3mo由同一医师分别使用计算机随机点立体图和TNO立体视检查图检查立体视觉并比较其结果差异。结果:所有受试者均具有不同程度的立体视,由计算机随机点立体图测得黄斑部位立体视患者14例,黄斑中心凹部位立体视患者26例,眼底周边部位立体视38例;TNO立体视觉检查图分别为11例,24例和43例,黄斑立体视、黄斑中心凹立体视随机点检出率较TNO图高,但是两者差异无统计学意义。使用计算机随机点立体图测得的正常与异常立体视结果为32例、46例,使用TNO立体视检查图测得的正常与异常立体视结果为35例、43例,差异无统计学意义。结论:新型计算机随机点立体视图对白内障术后立体视检查的结果与TNO立体图具有较高的一致性,是一种可靠的测量立体视功能的方法,可以用于白内障患者术后立体视觉功能的检测。
简介:目的:针对较大翼状胬肉,采用胬肉切除、角膜缘干细胞移植联合全角膜羊膜覆盖术,或胬肉切除和角膜缘干细胞移植术后配戴绷带型角膜接触镜进行治疗,观察两种方法的临床效果。方法:将侵及瞳孔区的较大翼状胬肉40眼随机分成两组,一组行翼状胬肉切除、角膜缘干细胞移植术联合全角膜羊膜覆盖术(羊膜组),另一组行胬肉切除和角膜缘干细胞移植术后配戴绷带型角膜接触镜(绷带镜组),每组各20眼。比较两组患者手术时间,以及术后第l、3d,1、3wk眼部舒适程度和角膜愈合情况与随访复发情况等。结果:平均手术时间:羊膜组为61.4±5.2min,绷带镜组为34.5±2.7min,绷带镜组手术时间明显缩短,两组差异有统计学意义(P<0.05)。两组患者的眼部舒适度在术后第Id无明显差异,但在术后第3d和术后lwk,绷带镜组患者的眼部舒适度明显优于羊膜组(P<0.01),至术后3wk时两组间差异无统计学意义(P>0.05)。术后3wk时两组患者的角膜愈合率评分分别为0.85±0.18分和1.15±0.18分,两组差异无统计学意义(P=0.25)。羊膜组有1眼胬肉复发。结论:在侵及角膜的较大翼状胬肉治疗中,胬肉切除和角膜缘干细胞移植术后联合全角膜羊膜覆盖或术后配戴绷带型角膜接触镜均有助于缓解眼部不适症状和促进角膜创面修复,使用绷带型角膜接触镜患者更舒适,治疗更便捷。
简介:AIM:Tocomparethetrabecularmeshwork(TM)andirisapoptosisoftreatedanduntreatedprimaryopenangleglaucoma(POAG)patients.METHODS:Eighttreatment-naive,newlydiagnosed(group1)and11medlcaiytreated(group2)patientswithPOAGwereincludedinthestudy.Eachpatientunderwentalimbus-basedtrabeculectomy.TheTMandperipheralirisspecimensweredissectedoutandweresnap-frozeninliquidnitrogenandstoredat-80tuntiltheywereassayed.ApoptosisineachgroupwasassesedbyTUNELmethod.RESULTS:Themeanpatientagewas60.6±5.8years(53-68years)vs58.9±8.9years(47-70years)ingroup1andgroup2(P=0.859).Themeantreatmenttimeingroup2was22.2±7.3months(12-34months).ApoptoticindexesinTMandirisweresignificantlyhigherinPOAGpatientsusingmedication(group2)comparedtotreatment-naivePOAGpatients(group1)(P=0.004,0.015;respectively).CONCLUSION:LongtermadministrationoftopicalantiglaucomamedicationscausesadditionaltoxiceffectsonTM.
简介:目的:评价并比较180°和360°选择性激光小梁成形术(selectivelasertrabeculoplasty,SLT)治疗原发性开角型青光眼(primaryopenangleglaucoma,POAG)的临床效果。方法:POAG患者60例60眼,分别采用532nm倍频Q-开关Nd:YAG激光治疗仪,以光斑400μm,脉冲时间3ns,能量0.3~1.2mJ行180°和360°SLT。观察患者术后6mo的眼压变化。结果:两组患者眼压在激光治疗后均有显著下降,180°组患者术前平均眼压为25.6±2.0mmHg(1kPa=7.5mmHg),术后1h;1d;1wk;1,3,6mo眼压分别为27.1±2.1,16.5±1.9,19.6±1.9,18.5±1.8,19.9±1.9,20.3±1.8mmHg。360°组患者术前平均眼压为25.4±2.1mmHg,术后对应时间点眼压分别为26.6±1.9,15.9±2.0,19.0±2.0,17.8±1.9,18.7±2.0,19.2±1.9mmHg。两组术后1d;1wk;1,3,6mo的眼压与术前相比明显下降,差异均有统计学意义(P〈0.01)。术后两组各时间点眼压的平均下降幅度比较,360°组较180°组术后眼压的平均下降幅度更大,其中术后3mo和6mo差异具有统计学意义(P〈0.05)。结论:360°SLT治疗POAG的疗效可能优于180°SLT。
简介:AIM:Toevaluatetheaccuracyofsphericalequivalent(SE)estimatesofadouble-passsystemandtocompareitwithretinoscopy,subjectiverefractionandatablemountedautorefractor.METHODS:Non-cycloplegicrefractionwasperformedon125eyesof65healthyadults(age23.5±3.0years)fromOctober2010toJanuary2011usingretinoscopy,subjectiverefraction,autorefraction(AutokeratorefractometerTOPCONKR-8100,Japan)andadoublepasssystem(OpticalQualityAnalysisSystem,OQAS,VisiometricsS.L.,Spain).Nineconsecutivemeasurementswiththedouble-passsystemwereperformedonasubgroupof22eyestoassessrepeatability.ToevaluatethetruenessoftheOQASinstrument,theSElaboratorybiasbetweenthedoublepasssystemandtheothertechniqueswascalculated.RESULTS:TheSEmeancoefficientofrepeatabilityobtainedwas0.22D.SignificantcorrelationscouldbeestablishedbetweentheOQASandtheSEobtainedwithretinoscopy(r=0.956,P<0.001),subjectiverefraction(r=0.955,P<0.001)andautorefraction(r=0.957,P<0.001).ThedifferencesinSEbetweenthedouble-passsystemandtheothertechniquesweresignificant(P<0.001),butlackedclinicalrelevanceexceptforretinoscopy;Retinoscopygavemorehyperopicvaluesthanthedouble-passsystem-0.51±0.50Daswellasthesubjectiverefraction-0.23±0.50D;Moremyopicvalueswereachievedbymeansofautorefraction0.24±0.49D.CONCLUSION:Thedouble-passsystemprovidesaccurateandreliableestimatesoftheSEthatcanbeusedforclinicalstudies.Thistechniquecandeterminethecorrectfocuspositiontoassesstheocularopticalquality.However,ithasarelativelysmallmeasuringrangeincomparisonwithautorefractors(-8.00to+5.00D),andrequirespriorinformationontherefractivestateofthepatient.
简介:目的通过检测Fas和FasL在鼻息肉中的表达,研究细胞凋亡和Fas/FasL系统在鼻息肉发病机制中的作用.方法用免疫组化方法检测Fas和FasL在35例鼻息肉和17例正常下鼻甲组织中的表达.对Fas和FasL阳性细胞的类型、分布特点进行分析.结果1.Fas和FasL在鼻息肉组织中的表达均较正常下鼻甲组织明显增强,差异有显著性.2.Fas在上皮细胞和间质细胞中都有阳性表达,主要表达于息肉表面的上皮细胞和间质内的炎性细胞中.结论1.Fas/FasL系统介导的凋亡在鼻息肉的发病机制中有重要作用,可能是鼻息肉长期保持良性增生的重要因素.2.FasL在鼻息肉上皮细胞中的高表达与上皮细胞的过度增生及Fas/FasL系统的免疫监视作用有关.
简介:目的:比较原发性开角型青光眼和高眼压患者及拥有健康眼球表面的正常人群的泪膜功能和印象细胞学检查的数值。方法:此前瞻性研究中纳入了原发性开角型青光眼患者11例11眼(平均年龄:62.7±6.1岁),高眼压患者12例12眼(平均年龄:62.8±6.4岁)及健康人12例12眼(平均年龄:62.9±6.03岁)。这些患者均是最近被诊断出患有原发性开角型青光眼及高眼压,且之前未接受过抗青光眼方面的治疗。均行结膜印迹细胞学检查、泪膜破裂时间和基础泪液分泌试验。每组印迹细胞学检查的样本根据Nelson分级法分为0-3级。应用Kruskal-Wallis检验和Dunn多重比较检验进行统计分析。结果:原发性开角型青光眼患者,高眼压患者及正常人群平均基础泪液分泌值分别为10.4±1.3,10.9±1.2和11.1±1.1mm/5min,其差距没有统计学意义(P=0.33);三组的泪膜破裂时间分别为11.2±1.1,11.3±1.1和11.8±1.2s,其差距没有统计学意义(P=0.35)。原发性开角型青光眼患者中6眼(54.5%)为0级,5眼(45.5%)为1级。高眼压患者中6眼(50%)为0级,6眼(50%)为1级,健康人中6眼(50%)为0级,6只眼(50%)为1级(P=0.97)。结论:氧化应激可能会导致青光眼,眼表疾病,泪腺功能障碍及机体杯状细胞所分泌的黏液减少。原发性开角型青光眼患者,高眼压症患者及健康人群间的印象细胞学检查数值并无显著差异。
简介:AIM:ToinvestigatetheexpressionsoftypeIcollagen,α2integrinandβ1integrinintheposteriorscleraofguineapigswithdefocusmyopiaandwhetherbasicfibroblastgrowthfactor(bFGF)injectioninhibitstheformationanddevelopmentofmyopiabyupregulatingtheexpressionoftypeIcollagen,α2integrinandβ1integrin.METHODS:After14daysoftreatment,therefractivestateandaxiallengthweremeasuredandthelevelsoftypeIcollagen,α2integrinandβ1integrinwereassayedintheposteriorscleraeofgroupsofguineapigsthatworeamonocular-7Dpolymethylmethacrylate(PMMA)lensorhad-7DlenswearfollowedbytheperibulbarinjectionofPhosphateBufferSolution(PBS)orbFGF.Theuntreatedfelloweyeservedasacontrol.Guineapigswithnotreatmentservedasnormalgroup.·RESULTS:Theresultsshowedthat14daysofmonoculardefocusincreasedaxialeyelengthandrefraction,whilebFGFdeliveryinhibitedthemmarkedly.Further,itwasalsofoundthatthemonocular-7DlenscoulddecreasethelevelsoftypeIcollagen,α2integrinandβ1integrinexpressions,while,unlikePBS,bFGFincreasedthemsignificantlyincomparisontocontralateralcontroleyesandnormaleyes.CONCLUSION:bFGFcanpreventtheformationanddevelopmentofdefocusmyopiabyupregulatingtheexpressionsoftypeIcollagen,α2integrinandβ1integrin.Takentogether,ourresultsdemonstratethatbFGFpromotesscleraremodelingtopreventmyopiainguineapigs.