简介:AIM:Toaddressissuesininteroperabilitybetweendifferentfundusimagesystems,weproposedawebeyepicturearchivingandcommunicationsystem(PACS)frameworkinconformancewithdigitalimagingandcommunicationinmedicine(DICOM)andhealthlevel7(HL7)protocoltorealizefundusimagesandreportssharingandcommunicationthroughinternet.METHODS:Firstly,atelemedicine-basedeyecareworkflowwasestablishedbasedonintegratingthehealthcareenterprise(IHE)EyeCaretechnicalframework.Then,abrowser/serverarchitectureeye-PACSsystemwasestablishedinconformancewiththewebaccesstoDICOMpersistentobject(WADO)protocol,whichcontainsthreetiers.RESULTS:Inanyclientsysteminstalledwithwebbrowser,clinicianscouldlogintheeye-PACStoobservefundusimagesandreports.Multipurposeinternetmailextensions(MIME)typeofastructuredreportissavedaspdf/htmlwithreferencelinktorelevantfundusimageusingtheWADOsyntaxcouldprovideenoughinformationforclinicians.Somefunctionsprovidedbyopen-sourceOviyamcouldbeusedtoquery,zoom,move,measure,viewOICOMfundusimages.CONCLUSION:Suchwebeye-PACSincompliancetoWADOprotocolcouldbeusedtostoreandcommunicatefundusimagesandreports,thereforeisofgreatsignificanceforteleophthalmology.
简介:<正>DirSir,IamdoctorGuo-YuanYang,fromtheDepartmentofOphthalmologyofWestChinaHospitalofSichuanUniversityinChengdu,SichuanProvince,China.Iwritetopresentacasereportofposteriorlentiglobuswithcataract.
简介:AIM:Toinvestigatetheefficacyofnon-buckledvitrectomywithclassicalendotamponadeagentsinthetreatmentofprimaryretinaldetachment(RD)complicatedbyinferiorbreaksandproliferativevitreoretinophathy(PVR).METHODS:Aretrospective,consecutiveandcaseseriesstudyof40patientswithinferiorbreakRDandPVR≥C1wasconducted.Allpatientsunderwentastandard3-port20-gaugeparsplanavitrectomy(PPV)withgasorsiliconeoiltamponadewithoutsupplementaryscleralbuckling.Thevitreousandallproliferativemembranewerecompletelyremoved,andretinectomywasperformedwhennecessary.Themeanfollow-upwas12.5months.Theprimaryandfinalanatomicsuccessrate,visualacuityandcomplicationswererecordedandanalyzed.RESULTS:Primaryanatomicsuccessratewasachievedin35of40eyes(87.5%)andthefinalanatomicsuccessratewas100%.ThemostcommoncauseofredetachmentwasrecurrentPVR.Thebest-correctedvisualacuity(BCVA)atfinalfollow-upwasimprovedin34eyes(85%),remainedstablein1eye(2.5%),andworsenedin5eyes(12.5%).Themeanvisualacuityatfinalfollow-upwasimprovedsignificantly(P=0.000).CONCLUSION:ThisretrospectivestudyprovidesevidencethatvitrectomywithoutscleralbucklingseemedtobeaneffectivetreatmentforinferiorbreakRDwithPVR.Withcompleteremovalofvitreousandproliferativemembranesandtimingofretinectomy,theinferiorbreakswhichcomplicatedwithPVRcouldbeclosedsuccessfullywithoutadditionalscleralbuckling.
简介:目的方法结果结论分析青光眼小梁切除术后浅前房的原因及治疗效果。对2003年2月-2008年1月126例(138眼)青光眼小梁切除术后浅前房者(37眼)进行回顾性分析。138眼小梁切除手术有37眼(26.81%)发生浅前房,其发生原因有:滤过过强17眼(45.95%),结膜瓣渗漏14眼(37.84%),脉络膜脱离2眼(5.41%),睫状环阻塞性青光眼1眼(2.7%),其它3眼(8.1%)。其中33眼(89.19%)经保守治疗治愈,4眼(10.81%)经前房注射透明质酸钠治疗,使前房形成。青光眼小梁切除术后浅前房发生率较高,大部分经保守治疗可恢复正常,透明质酸钠在前房重建中效果良好。
简介:目的:应用频域光学相干断层扫描(opticalcoherencetomography,OCT)对特发性和继发性黄斑前膜(macularepiretinalmembrane,ERM)的形态特征、黄斑中心凹厚度及其与视力的关系进行对比研究。方法:应用频域OCT观察用裂隙灯显微镜、荧光素眼底血管造影(fundusfluoresceinangiography,FFA)及OCT确诊为特发性ERM(92例112眼)、继发性ERM(78例96眼)的患者,观察前膜的形态特征、定量测量前膜及其下视网膜厚度、分析黄斑中心凹厚度与视力的关系。结果:ERM的OCT图像表现为视网膜神经上皮层表面厚薄不一的高反射光带,主要表现为前膜与视网膜内表面出现局灶及大部分粘连,其次表现为黄斑中心凹变浅或消失、神经上皮层增厚、黄斑水肿。特发性ERM患者视网膜平均厚度为398.32±112.07μm,前膜的平均厚度为52.28±9.65μm;继发性ERM患者视网膜平均厚度为416.87±104.17μm,前膜的平均厚度为57.05±10.33μm。两组间的差异无统计学意义(P〉0.05)。在相同视力区间,两组黄斑中心凹厚度比较,差异无统计学意义(P〉0.05)。而分别在两组及同组不同视力区间之间,黄斑中心凹厚度差异有统计学意义(P〈0.05)。结论:OCT可以客观地显示ERM及黄斑部组织结构的改变,并能定量检测ERM、中心凹视网膜厚度变化,是ERM可靠的检测手段。
简介:AIM:ToInvestigatetheeffectsoftransforminggrowthfactorβ2(TGF-β2)andconnectivetissuegrowthfactor(CTGF)ontransdifferentiationofhumanlensepithelialcells(HLECs)culturedinvitroandsynthesisofextracellularmatrix(ECM).METHODS:HLECsweretreatedwithTGF-β2(0,0.5,1.0,5,10μg/L)andCTGF(0,15,30,60,100μg/L)fordifferenttimes(0,24,48,72h)invitroandtheexpressionofα-smoothmuscleactin(α-SMA),themaincomponentoftheextracellularmatrixtypeⅠcollagen(Col-1)andfibronectin(Fn)weremeasuredbyusingreal-timepolymerasechainreaction(PCR)andwestern-blot.RESULTS:TGF-β2andCTGFsignificantlyincreasedexpressionofα-SMAmRNAandprotein(P<0.05,P<0.001),FnmRNAandprotein(P<0.001),Col-1mRNAandprotein(P<0.001).TGF-β2couldinduceHLECsexpressionofCTGFmRNAandproteinindosedependentmanner(P<0.05,P<0.001).TGF-β2andCTGFcouldinduceHLECstoexpressα-SMA,FnandCol-1intime-dependentmanner.EachtimeofTGF-β2andCTGFinducedHELCsexpressionofα-SMA,Fn,Col-1mRNAandproteinwassignificantincreasecomparedwithcontrol(P<0.05,P<0.001).CONCLUSION:TGF-β2andCTGFcouldinduceHLECsepithelialmesenchymaltransitionandECMsynthesis.
简介:AIM:Tostudythedistributionofocularhigher-orderaberrations(HOAs)andmesopicpupilsizeinindividualsscreenedforrefractivesurgery.·METHODS:OcularHOAsandmesopicpupilsizewerestudiedin2458eyesof1240patientswithmyopia,myopicastigmatismandcompoundmyopicastigmatismand215eyesof110patientswithhyperopia,hyperopicastigmatismandcompoundhyperopicastigmatismusingtheZywaveaberrometer(Busch&Lomb).Allpatientshadcorrectablerefractiveerrorswithoutahistoryofrefractivesurgeryorunderlyingdiseases.Root-mean-squarevaluesofHOAs,totalsphericalaberration,totalcomaandmesopicpupilsizewereanalyzed.OcularHOAsweremeasuredacrossa≥6.0mmpupil,andpupilsizemeasurementswereperformedunderthemesopiccondition.·RESULTS:ThemeanvaluesofHOAs,totalsphericalaberrationandtotalcomainthemyopicgroupwere0.369μm,±0.233,0.133±0.112μmand0.330±0.188μm,respectively.InthehyperopicgroupthemeanvaluesofHOAs,totalsphericalaberrationandtotalcomawere0.418μm±0.214,0.202±0.209μmand0.343±0.201μm,respectively.HyperopesshowedgreatertotalHOAs(P<0.01)andtotalsphericalaberration(P<0.01)comparedtomyopes.Inage-matchedanalysis,onlytheamountoftotalsphericalaberrationwashigherinthehyperopicgroup(P=0.05).Mesopicpupilsizeinthemyopicgroupwaslarger(P≤0.05).·CONCLUSION:TheresultssuggestedthatsignificantlevelsofHOAswerefoundinbothgroupswhichareimportantforplanningrefractivesurgeriesonIranians.Thereweresignificantlyhigherlevelsoftotalsphericalaberrationinhyperopescomparedtomyopes.Mesopicpupilsizewaslargerinmyopicgroup.
简介:AIM:Toexaminetheα-Galgeneexpressionanddistributioninthedifferentspecies/genusanddevelopingphaseanimalocularsurfacetissue.METHODS:α-Galbindingassaywerecarriedoutonvariousanimaleyesections.Photograph,slit-lampobservationonvariouseyeshowednormalcornealtransparence.RESULTS:Astrongα-Galexpressionininvertebratesandsomevertebratesoculartissue,butnoα-Galbindinginbirds,fishandmammal.α-Galexpressionchangeinthedevelopmentofmiceocularsurfacetissue(exceptsclera)anddisplaygenusdependencyinthedifferentmurineocularsurfacetissue.CONCLUSION:Thisstudyidentifiedspecificα-Galepitopesbindingareaintheocularsurfaceofseveralspeciesandmaysolvetheproblemthatnaiveocularsurfacemaybeusedasnaturalα-Galgeneknockoutmodel/highriskimmunologicrejectionmodelorocularsurfacescaffoldmaterial.
简介:目的:分析眼部黑色素瘤临床和病理学特点,以利于早期正确诊断和治疗。方法:回顾性系列病例研究。收集我院2001-08/2011-08门诊及住院眼部黑色素瘤24例,复习患者的临床和病理资料,所有病例采用常规石蜡切片、HE染色,部分病例常规诊断困难的加做S-100蛋白和HMB-45免疫组织化学染色。Excel建立数据库,应用SPSS17.0软件进行统计学分析。结果:患者24例均为单眼发病,男13例,女11例;左眼14例,右眼10例;3例眼睑恶性黑色素瘤,6例原发性结膜黑色素瘤;15例葡萄膜黑色素瘤。结论:黑色素瘤组织病理学变化多样,多数病例常规病理确诊,免疫组织化学对黑色素瘤诊断和鉴别诊断有重要价值。
简介:目的:探讨Avastin与Lucentis对人脐静脉血管内皮细胞(humanumbilicalveinendothelialcells,HUVEC)增殖和迁移的影响,了解其抑制血管生成的途径。方法:采用MTT比色法研究相同浓度Avastin与Lucentis对HUVEC增殖作用的差异;Transwell小室检测相同浓度Avastin与Lucentis对HUVEC迁移作用的差异。结果:MTT比色法显示,各浓度Avastin组、Lucentis组与对照组相比,吸光度值具有统计学差异(P〈0.05),相同浓度Avastin组与Lucentis组吸光度值无统计学差异(P〉0.05);Transwell分析方法显示,各浓度Avastin组、Lucentis组与对照组相比,HUVEC迁移率具有统计学差异(P〈0.05),相同浓度Avastin组与Lucentis组HUVEC细胞迁移率无统计学差异(P〉0.05)。结论:Avastin与Lueentis均可以抑制HUVEC增殖和迁移:随着药物浓度增加,对HUVEC增殖和迁移的抑制作用增强;相同浓度Avastin与Lucentis在体外实验中对HUVEC增殖和迁移的抑制作用无统计学差异(P〉0.05)。
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:研究柚皮素对激光诱发大鼠脉络膜新生血管形成(CNV)、高眼压兔眼血流和缺血大鼠眼视网膜功能恢复的作用。方法:选择雄性棕色挪威大鼠,采用激光诱发Bruch膜破裂后,予10g/L(20mg/kg)柚皮素,1次/d,持续4wk;光凝后2,4wk分别做眼底荧光血管造影,评估CNV的形成。采用彩色微球技术、眼电生理技术检测兔眼血流和大鼠视网膜功能恢复。结果:与对照组比较,10g/L柚皮素能明显增加高眼压兔眼脉络膜血流(P〈0.05),能明显增加缺血大鼠眼视网膜功能恢复(P〈0.05),能明显减轻光凝点荧光素渗漏(75.8%~95.0%,P〈0.01)。结论:柚皮素能抑制激光诱发大鼠络膜新生血管形成;增加高眼压兔眼脉络膜血流;增加缺血大鼠眼视网膜功能恢复。
简介:目的:探讨胎牛血清对小鼠角膜上皮细胞生长和分化的影响。方法:分别在无血清低钙培养基(KSFM)和含100mL/L胎牛血清的KSFM中培养小鼠角膜上皮细胞。比较两种培养基中角膜上皮细胞的群体倍增(PD)。通过RT-PCR和Westernblotting方法检测p63、角蛋白19以及involucrin的表达。结果:在KSFM中,小鼠角膜上皮细胞可稳定传代超过25代,但在含胎牛血清的培养基中,细胞仅能存活3代。在KSFM中,培养细胞呈典型铺路石样外观,RT-PCR和Westernblotting结果显示细胞表达p63、角蛋白19以及involucrin。当培养基中加入胎牛血清后,细胞形态明显增大,呈扁平状;involucrin表达显著增强。结论:胎牛血清可抑制小鼠角膜上皮细胞增生、诱导其分化。
简介:AIM:Toassessthequantitativeassociationbetweenanisometropiamagnitude(AM)andthelossesofresolutionandcontrastsensitivity;andtoexemplifyhowthefunctionoffusionandstereopsisvarywithAMinpreviouslyuntreatedanisometropicamblyopia.METHODS:Atotalof57patientswithpreviouslyuntreatedanisometropicamblyopiawithoutstrabismus(range:8-35years),weremeasuredrefractiveerror,bestcorrectedvisualacuity(BCVA),fusionandstereopsis,and48patientshavecompletedcontrastsensitivityfunctiontest.AMwasdeterminedbydioptricvectoradditionmodel,andtheamblyopiadepthwasdeterminedbythedifferenceofBCVAinlogMARunitsbetweentheamblyopicandfelloweyes.RESULTS:AMwassignificantlycorrelatedwithbothamblyopiadepth(PearsonR=0.728,P<0.001)andtheinter-oculardifferenceoftheareaunderthelogcontrastsensitivityfunction(AULCSF)(R=0.505,P<0.001).Depthofamblyopiaandtheinter-oculardifferenceofAULCSFwasalsosignificantlycorrelated(R=0.761,P<0.001).Themoreseverityofamblyopia,thepoorerlevelsofcontrastsensitivity.MostpureanisometropeswithAMwaslessthan3.0Dretainfusionandsomestereopsis,butwhenAMweremorethan3.0D,especiallyfortheanisometropeswhoseAMwasmorethan6.0D,fusionandstereopsisfunctionwereseriouslyimpaired.CONCLUSION:Inthepatientswithpreviouslyuntreatedanisometropicamblyopia,higherdegreeofanisometropiaissignificantlyassociatedwithdeeperamblyopia,worsecontrastsensitivity,fusionandstereopsisfunctions.
简介:目的:探讨高度近视黄斑病变的光学相干断层扫描(OCT)和眼底荧光血管造影(FFA)的形态学特征、分类和对比分析。方法:对入选的高度近视黄斑病变患者61例101眼均行标准对数视力表检查,验光确定屈光度及最佳矫正视力(BCVA),并用IOL-Master测量眼轴长度。入选者需在同一天内行散瞳眼底检查、OCT及FFA检查,必要时行眼底联合造影(FFA&ICGA)。分析不同类型的OCT及FFA形态学特征之间的相互联系,并探讨其与屈光度、最佳矫正视力、眼轴长度及中心凹厚度之间的关系。结果:FFA分类的漆样裂纹型在OCT分类的1型中所占比例为57.14%,显著高于新生血管型和黄斑萎缩型(21.43%),差异有统计学意义(P<0.05)。FFA分类的黄斑萎缩型在OCT分类的2型中所占的比例为67.80%,显著高于漆样裂纹型(18.64%)和新生血管型(13.56%),差异有统计学意义(P<0.05)。OCT3型均属于FFA分类的黄斑萎缩型。OCT1型的屈光度、眼轴长度明显低于2型和3型,而最佳矫正视力和中心凹厚度则明显高于2型和3型。FFA的漆样裂纹型与新生血管型在屈光度及眼轴长度上虽无明显差异,但后者的BCVA及中心凹厚度显著低于前者(P<0.05)。漆样裂纹型及新生血管型的屈光度、眼轴长度均显著低于黄斑萎缩型,最佳矫正视力则明显高于黄斑萎缩型(P<0.05)。结论:高度近视黄斑病变的OCT和FFA形态学特征密切相关,结合OCT和FFA的图像特征对高度近视黄斑病变形态学改变进行对比分析,不仅有助于明确病变的性质,提高我们对疾病发病机制及预后转归的认识,更为临床诊疗提供了有力的支持。