简介：目的观察1,25（OH）2D3对高糖诱导牛视网膜血管内皮细胞（BRECs）中血管内皮生长因子（VEGF）的表达水平变化及对细胞凋亡水平的影响。方法将分离培养的BRECs分为三组,分别为正常糖组、高糖组和高糖处理组。正常对照组细胞培养液含5mmol/L葡萄糖,高糖组细胞培养液含30mmol/L葡萄糖,高糖处理组细胞培养液含30mmol/L葡萄糖和50nM,1,25（OH）2D3。培养48h后收集细胞蛋白。蛋白免疫印迹法检测细胞VEGF及细胞凋亡相关蛋白Bax和Bcl-2表达水平;PI/Hoechst双染色法检测细胞凋亡。结果相比于正常糖组,高糖组中VEFG水平和Bax/Bcl-2比值显著增加;而在高糖处理组中表达水平远远低于高糖组,差异均有统计学意义（P〈0.05）。高糖的细胞凋亡水平高于正常糖组,而经过1,25（OH）2D3处理后,其细胞凋亡水平则有所下降,差异均有统计学意义（P〈0.05）。结论1,25（OH）2D3可以抑制高糖诱导BRECs中VEGF表达增加及细胞凋亡。

简介：AIM:Toassesstheeffectofmyopiaonthethicknessofretinalnervefiberlayer(RNFL)measuredby3Dopticalcoherencetomography(3D-OCT)inagroupofnonglaucomatousChinesesubjects.METHODS:Twohundredandfifty-eighteyesof258healthyChinesemyopicindividualswererecruitedandfourgroupswereclassifiedaccordingtotheirsphericalequivalent(SE):lowmyopia(n=42,-0.50D),moderatemyopia(n=120,-3.0D≤SE<-6.0D),highmyopia(n=58,-6.0D≤SE<-8.0D)andextremehighmyopia(n=38,SE≥-8.0D).TheRNFLthicknessprofileincludingsuperior,nasal,inferiorandtemporalquadrantandeachofthe12clock-hourthicknessesweremeasuredby3DOCT.TheRNFLthicknessesamongfoursamplegroupswereperformedbyone-wayanalysisofvariance(onewayANOVA)andleastsignificantdifferencetest(LSDtest).CorrelationsbetweenRNFLthicknessandaxiallength/sphericalequivalentwereperformedbylinearregressionanalysis.RESULTS:TheoverallRNFLparametersshownsignificantdifferencesbetweengroupsexcluding7,9,10,11o’clockhourthickness.TheRNFLthicknessofsuperior,nasal,inferior,averageand1,2,3,4,5,6,12o’clocksectorsweredecreasedwiththeincreasingaxiallengthandhigherdegreeofmyopia.Incontrast,asaxiallengthandthedegreeofmyopiaincreased,thetemporaland8,9o’clocksectorsthicknesseswereincreased.Aconsiderableproportionofmyopiceyeswereclassifiedasoutsidethenormallimits.Sixo’clockwasthemostnotableofthetotal,which43.4%wereoutsidethenormallimits.CONCLUSION:OnthemeasurementofRNFL,thecharacteristicsofRNFLwiththechangeofthedegreeofmyopiawereobserved.Asthedegreeofmyopiaincreases,theRNFLthicknessmeasuredby3D-OCTincludingtheaverageandsuperior,nasal,inferiorsectorsdecreases.AndduetothechangeofRNFLthickness,itshouldbeconsideredwhenusingOCTtoaccessforthedamageofglaucomaespeciallypeoplewithmyopia.

简介：喉异物在呼吸道异物中发生率很低，郭运凯等统计其发生率为4．1％，但其危害极大，若不及时治疗很容易引起患者死亡。我科1991年1月至2006年12月收治呼吸道异物346例，其中喉异物5例，发生率为1．4％，误诊3例，现报告如下。

简介：<正>笔者曾遇罕见食管异物3例,报道如下:例1男性,23岁,犯人。追捕时企图自杀吞服水泥块二十分钟,由当地民警于1995年6月23日押赴来院,入院时患者流涎,吞咽疼痛,进食困难,颈部压痛,食管钡透示:食管上段巨大异物。当日下午急诊全麻气管插管行食管镜下异物取出术,用13mm×18mm×350mm横径最粗的食管镜沿右侧梨状窝进入食管入口见异物位于食管上端,除上方与食管壁有一裂隙外,其余均与食管壁嵌顿,用常规方法不能取出异物。临时制成一长约50cm,直径0.5cm的

简介：我科收治的患眼无视功能患者25例，保留自体巩膜壳，行羟基磷灰石义眼台植入术，现报告如下。

简介：AIM:Toreportthecytologyresultsof25-gaugetransconjunctival(25G-TSV)diagnosticvitrectomyincasessuspiciousforintraocularlymphoma(IOL),andcomparetheresultstothosereportedintheliterature.METHODS:Clinicalandcytopathologicalrecordsof18vitreousbiopsyspecimensobtainedvia25G-TSVdiagnosticvitrectomyin12patientssuspiciousforIOLwerereviewedretrospectively.Areviewoftheliteratureinregardstothediagnosticyieldsofvitreousspecimensobtainedvia25-gaugeand20-gaugediagnosticvitrectomyinsuspectedcasesofIOLwasperformed.RESULTS:Eighteeneyesfrom12patientswithclinicalsuspicionofIOLunderwentdiagnostic25G-TSV.ThecytopathologicalinvestigationsdemonstratedIOLin15eyes(83.3%).Vitreousanalysiswasnon-diagnosticin3eyes(16.7%).CONCLUSION:Twenty-five-gaugediagnosticvitrectomyyieldsadequatesampleforcytologicalevaluationofthevitreousincasessuspiciousforIOL.Thediagnosticresultsofthe25G-TSVinthecurrentstudyaresuperiortothosereportedfor20-gaugevitrectomybutequivalenttothosereportedfor25G-TSVinthepublishedliterature.

简介：AIM:Tocomparetheclinicaloutcomesofcombined25-gaugeparsplanavitrectomy（PPV）andphacoemulsification/posteriorchamberintraocularlens（PC-IOL）implantationwithvitrectomyalonesurgeryinpatientswithvariousvitreoretinaldiseases.METHODS:Atotalof306eyes（145withPPValoneand161withphaco-vitrectomy）wereenrolledinthisretrospectiveanalysis.Thesurgicalapproachwas25-gaugePPVcombinedwithphacoemulsificationandPC-IOLimplantationatthesametimeineyesinphaco-vitrectomygroupandonlyPPVineyesinvitrectomyalonesurgerygroup.Themainoutcomemeasureswerepostoperativeclinicaloutcomesincludedanteriorchamberinflammation,changesinintraocularpressure（IOP）andbestcorrectedvisualacuity（BCVA）.RESULTS:Themostcommonpostoperativecomplicationwasanteriorchamberreactionwhichhashigherincidenceinphaco-vitrectomygroup（P<0.001）.Themeanpostoperative1stdayIOPofvitrectomyalonegroupwassignificantlylowerthanthatofphaco-vitrectomygroup（16.3±5.8mmHgvs17.8±8.1mmHg,respectively,P=0.02）.Hypotony(IOP（8mmHg）wasnotdifferentbetweengroupsinthepostoperative1stday（P>0.05）.Themeanpreoperativevisualacuitywasnotdifferentbetweengroups（1.6±0.9logMARvs1.8±0.9logMAR,respectively,P>0.05）.However,themeanvisualacuitywasdecreasedinvitrectomyalonegroupatthefinalvisitcomparedtophaco-vitrectomygroup（1.2±0.8logMAR,0.9±0.7logMAR,respectivelyP<0.05）.CONCLUSION:Twenty-fivegaugePPVcombinedwithphacoemulsificationsurgeryisasafeandefficientprocedure,whichcanbepreferredinphacicpatientswithavarietyofvitreoretinaldiseasescomparedtovitrectomyalone.Despiteimprovedoutcomes,thisapproachisnotfreeoflimitationsasanteriorchambercomplicationsespeciallywithcombinedsurgery.

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简介：90D裂隙灯显微镜前置镜是双凸透镜（图1），检查时是利用裂隙灯较强光源，检查时所获的眼底图像立体感好，可以很清楚地显示视盘小凹，血管变异，黄斑裂孔或囊肿，视网膜裂孔，眼内占位等病变，并且由于检查过程中不接触角膜，

简介：<正>刎颈伤多为开放性创伤,常伴有喉软骨或气管环的破裂、缺损、以及颈部大血管的损伤等。如不紧急抢救,常可因窒息或出血性休克而死亡或遗留严重后遗症。本文报告成功救治刎颈伤患者3例如下。

简介：<正>病例报告例1女,2岁6月。受凉后咳嗽、气促4天于1993年4月26日入院。当日中午呼吸困难加重,呈Ⅲ°吸入性呼吸困难,口唇发绀。追问病史,家长回忆患儿5天前吃杨梅后曾呛咳,当时无发绀。颈胸正侧位X线摄片显示声门区有椭圆形中等密度影,约0.8cm×1.0cm。疑为气管异物,急诊行支气管镜检查术,见声门下气管腔后壁有灰白色半圆

简介：AIM:Topresenttheoutcomeofmodifiedgridlaserphotocoagulation(GLP)indiffusediabeticmacularedema(DDME)ineyeswithoutextrafovealand/orvitreofovealtraction.METHODS:InclusioncriteriafortheretrospectivestudywereDDMEeyesofpatientswithtypeⅡdiabetesmellitusthathad≥4monthsoffollow-upfollowingGLP.Onlyoneeyeperpatientwasanalyzed.Using3-Dspectral-domainopticalcoherencetomography(3-DSDOCT),eyesthathadeitherextrafovealorvitreofovealtraction,orhadbeenpreviouslytreatedbyanintravitrealmedication(s)wereexcluded.TreatedDDMEeyesweredividedinto4groups:A)'Classic'DDMEthatinvolvedthecentralmacula;B)edemadidnotinvolvethemacularcenter;C)eyesassociatedwithcentralepiretinalmembrane(ERM);D)DDMEthatwasassociatedwithmacularcapillarydropout≥2disc-diameter(DD).RESULTS:GLPoutcomein35DDMEeyesafter4-24(mean,13.1±6.9)monthswasasfollows:GroupA)18eyeswith'classic'DDME.Followingoneor2(mean,1.2)GLPtreatments,best-correctedvisualacuity(BCVA)improvedby1-2Snellenlinesin44.4%(8/18)ofeyes,andworsenedby1linein11.1%(2/18).Centralmacularthickness(CMT)improvedby7%-49%(mean,26.6%)in77.8%(14/18)ofeyes.CausesofCMTworsening(n=4)werecommonlyexplainable,predominantly(n=3)associatedwithemergenceofextrafovealtraction,5-9monthspost-GLP.GroupB)GLP(s)inDDMEthatdidnotinvolvethemacularcenter(n=6)resultedinimprovedBCVAby1-2linesin2eyes.However,thecentralmaculabecameinvolvedintheedemaprocessaftertheGLPin3(50%)eyes,associatedwithanemergenceofextrafovealtractioninoneoftheseeyes4monthsfollowingtheGLP.GroupC)GLPfailedinall5eyesassociatedwithcentralERM.GroupD)GLPwasofpartialbenefitin2of6treatedeyeswithmacularcapillarydropout≥2DD.CONCLUSION:EyeswithDDMEthatinvolvedthemacularcenterwerefoundtoachievefavourableoutcomesafterGLP(s)duringmid-termfollow-up,unlesscomplicatedpre-GLPorpost-GLPbyvltreoretinalinterfaceabnormalities,oftenextrafovealtra

简介：患女，3岁。家长发现其右眼内有白色球状物质。外院诊断为“右眼玻璃体积血”。家长否认患儿既往有眼病和外伤史，否认全身其他系统严重的器质性疾病。眼科检查：右眼眼压Tn＋1。眶缘光滑，未扪及肿物。角膜透明，色素性KP（＋）。前房深浅正常，下方见数枚球形白色物质，直径约1～2min。虹膜表面新生血管。瞳孔散大，直径约6min，对光反应迟钝，

简介：目的：探讨线粒体膜电位（△ψm）、Caspase3在As2O3诱导ACC-2细胞凋亡中的作用。方法：进行ACC-2细胞培养,将As2O3建立不同药物浓度梯度（0,1.0,2.0,4.0,8.0μmol/L）分别作用于ACC-2细胞,用Rh123染色,流式细胞仪检测8.0μmol/LAs2O3作用前、后（24h）,ACC-2细胞的线粒体膜电位（△ψm）变化;用多功能酶标仪进行Caspase3活性检测。结果：空白对照组ACC-2细胞内Rh123荧光强度最强,8.0μmol/LAs2O3处理组ACC-2细胞内Rh123荧光强度减弱,其差异有显著性（P〈0.05）;随着As2O3药物浓度的增高（0,1,2,4,8μmol/L）,ACC-2细胞的Caspase3酶活力单位逐渐增加。结论：As2O3作用于ACC-2细胞,可通过降低线粒体膜电位从而引起细胞凋亡。随着As2O3药物浓度的增高,ACC-2细胞的Caspase3酶活力单位逐渐增加,Caspase3被激活,细胞可发生不可逆转的凋亡过程。

简介：目的探讨不同程度眼外伤前房积血的综合治疗。方法回顾性分析我院2007年1月至2010年10月收治的47例外伤性前房积血临床资料。结果Ⅰ级和Ⅱ级外伤性前房积血无再出血和其他并发症者恢复顺利,预后良好,Ⅲ级以上外伤性前房积血,或合并有再出血或其他并发症者恢复慢,预后不良。结论采取及时、合理的药物治疗,把握恰当的手术时机、选择正确的手术方法,促进积血吸收,防止再出血和并发症的发生是治疗的关键。

简介：目的：探讨术前注射曲安奈德（TA）联合25G微创玻璃体视网膜手术（vitreoretinalsurgery，VRS）治疗增生型糖尿病性视网膜病变（proliferativediabeticretinopathy，PDR）的效果。方法：选取我院眼科需行VRS治疗的PDR患者108例108眼随机分为两组，VRS＋TA组：VRS术前1wk行玻璃体腔注射TA的患者54例；VRS组：直接行VRS治疗患者54例，比较两组患者手术情况、术前、术后3mo裸眼视力、最佳矫正视力，术前、术后1wk，1、3mo眼压和并发症情况。结果：VRS＋TA组手术时间、电凝率、医源性裂孔率和术中出血率显著短于或低于VRS组，差异有统计学意义（P〈0.05），而两组患者眼内填充物比较无统计学差异（P〉0.05）；两组患者术后3mo裸眼视力和最佳矫正视力较术前均得到显著提高，差异有统计学意义（P〈0.05），两组间比较差异无统计学意义（P〉0.05）；VRS＋TA组术后1、3mo眼压较术前显著升高，差异有统计学意义（P〈0.05），两组间比较差异无统计学意义（P〉0.05）；VRS＋TA组前房渗出率显著低于VRS组，差异有统计学意义（P〈0.05），但两组并发症总发生率差异无统计学意义（P〉0.05）。结论：PDR患者行VRS治疗前1wk注射TA，可降低手术难度，缩短手术时间，并减少术中、术后并发症，利于患者术后视力改善。

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简介：患者男性，56岁。2009年8月20日因用力吹气球，当日出现左眼无痛性视力下降，9月23日就诊于我院眼科门诊。既往史、家族史无特殊。全身检查无异常。右眼视力1．0，左眼视力手动／眼前，矫正不能提高。双眼结膜无充血，角膜透明，前房深度正常，瞳孔圆，对光反射正常。双眼晶状体轻度混浊，左眼玻璃体积血，视网膜无法窥见，右眼眼底无异常。

简介：目的探讨听神经瘤误诊为眼科疾病的临床因素。方法对2004．5-2005．5首诊于我科的听神经瘤病例误诊情况进行回顾性分析。结果由于该病情发展缓慢,早期症状为非特异性;临床眼科医生对此病认识不足;缺乏系统、针对性检查等是导致误诊的主要原因。结论临床眼科医师应了解此病临床特点及眼科可能出现的体征,全面、细致检查是减少误诊有效方法。