简介：·AIM:Toreportvariousocularinjuriescausedbydurianfruit.·METHODS:Threecasesofocularinjuriesweredescribedinyoungpatients,duetoaccidentalfallofdurianfruitontheforeheadandface,whiletheyweretakingrest/sleeping/playingundertheduriantree.·RESULTS:Theocularinjuriesobservedwerelaceratinginjuryofcorneawithirisincarceration,hyphema,superficialpenetratinginjuryofscleraandanglerecessionglaucomaintherighteyeoffirstpatient;laceratinginjuryofcorneawithirisprolapseinthelefteyeofsecondpatient;subconjunctivalhaemorrhage,traumaticmydriasisandsuperficialpenetratinginjuryofsclera,commotionretinopathyandmacularedemainthelefteyeofthirdpatient.Visionimprovedtonormalinalltheeyesfollowingsurgical/medical/opticaltreatment.·CONCLUSION:Evidenceofpenetratinginjury(becauseofthorns)andbluntinjury(becauseofweight)canbeseenintheeyeswhendurianfruitfallsontheface.Visioncanberecoveredfullywithimmediateandappropriatetreatmentinthesecases.Theocularinjuriescanbepreventedbyeducatingthepublictowearprotectivemetalframewidegogglesandnottosleep/takerestundertheduriantree.

简介：AIM:Totestthehypothesisthatamblyopicneuroretinamayhaveanalteredthicknesswhencomparedtothenormal.·METHODS:Twenty-fiveamblyopic,youngpatientsbetweentheagesof7and11yearsoldwerestudied.Theinterestedneuroretinaareasaredefinedinto10sub-regionsaccordingtosuperior-inferior,nasal-temoral,andperi-paraaxis,whichcrossthefovelastructure.Thethicknessesoften,definedmacularregionswereseparatelymeasuredbyopticalcoherencetomography(OCT)andanalyzedbyt-test.·RESULTS:Theaveragethicknessofneuroretinaintheexactfoveolaoftheamblyopiceyesislargerthanthatofnormaleyes(P<0.05),buttheothernineregionshavenosignificantdifference.Interestingly,inboththenormalandamblyopiceyes,thetemporalarealooksthinnerthanotherquadrants(P<0.05).·CONCLUSION:Thicknessalterationmaybeassociatedwithamblyopicdisordersinyoungpatients.Studyingalargervolumeofsubjectsofsimilarageisrequiredtoconfirmthisobservation.

简介：血管生成素(angiopoietin,Ang)是特异性作用于血管内皮细胞的生长因子,主要由Ang-1和Ang-2组成;Tie2(tyrosinekinasethatcontainsimmunoglubin-likeloopsandepidernalgrowthfactor-similardomains2)是其共同受体.Ang-1促使血管成熟,维持血管稳定.Ang-2则拮抗Ang-1的作用,始动病理性新生血管形成.在眼部新生血管形成过程中Ang/Tie2受体途径起重要作用,抑制Ang/Tie2受体途径可以抑制眼部新生血管形成.

简介：AIM:ToinvestigatetheregulationofEaf2proteininmouselenscellsapoptosisinducedbyultraviolet(UV)radiation.METHODS:AneyeofEaf2geneknockoutmiceornormalcontrolmicewasexposedtoUVradiation,andtheotheronewasnon-exposed.AlloflenseswereanalyzedbyTUNELandcaspase3activityassaystodeterminethedifferenceoftheapoptosisinducedbyUVradiation.Inaddition,exposedandnon-exposedlenseswereanalyzedbyquantifiedp53expressionandreal-timereversetranscription-polymerasechainreaction(RT-PCR)ofBax,Bid,Apaf-1,PumaandNoxa,tocompareEaf2geneknockoutmiceandnormalcontrolmice.RESULTS:UVradiationcausedapoptosisoflenscellsinnormalcontrolmiceandEaf2knockoutmice.Activityofcaspase3wassignificantlyhigherinnormalcontrolmicethanEaf2knockoutmice.Expressionofp53proteinwassignificantlyhigherinlensesexposedtoUVradiationthannonexposedlenses,butwassimilarbetweenEaf2geneknockoutmiceandnormalcontrolmiceinthesameUVcondition.AfterexposingtoUVradiation,theanalysisofreal-timeRT-PCRdemonstratedthatmRNAlevelsofPumaandNoxaweresignificantlyhigherinlensesofnormalcontrolmicethanEaf2geneknockoutmice,andthatmRNAlevelsofBax,BidandApaf-1werenotsignificantlydifferentbetweengeneknockoutmiceandnormalcontrolmice.CONCLUSION:Eaf2increaseslenscellsapoptosisinducedbyultravioletradiation.AndEaf2up-regulatesexpressionofthePumaandtheNoxatoactonlenscellsapoptosisafterUVradiation.

简介：教育能够改变个人的生活,促进社会的变革。儿童在学校学习成绩的好坏,与他们的健康水平,包括视觉健康之间有着密切的联系。这反过来又影响到儿童未来的生活质量与经济生产力。学校的眼睛健康项目给上学儿童们提供了一个独一无二的机会,使他们能拥有全面的眼睛健康服务。

简介：<正>DearSir,IamDr.Sheng-LiMi,fromtheBiomanufacturingengineeringlaboratory,GraduateSchoolatShenzhen,TsinghuaUniversity,Shenzhen,China.Iwritetopresentacasereportofnocardiabrasiliensisinapatientwithdiabetes.Nocardiaispartofagroupofaerobicactinomycetes,widelydistributedinsoil.Nocardiaasteroidsandnocardiabrasiliensisarethemostcommonhumanpathogens.Humansinfectedbynocardiaasteroidsthroughtherespiratorytractmainlysufferfromprimarysuppurativepulmonaryconditions.Infectionofnocardiabrasiliensisoftenoccursintheadvancedstagesofaprogressivediseaseorimmunedisorder,especiallyCushingsyndrome,diabetes,orinpatientsusingcorticosteroids,immunosuppressiveagentsandbroad-spectrumantibioticsforlongtime[1].Toourknowledge,thereportsofnocardiakeratitiswasveryrare

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.

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：青光眼是全球第二大致盲性眼病，全球有近4亿青光眼患者，我国青光眼的患病率约为1.3%，居世界第二位，约有2300万青光眼患者。临床上青光眼导致的失明占整个眼科致盲的25%-40%，是世界上第一位不可逆性致盲性眼病。目前为止，人类尚无一种有效治疗手段能够治愈这一疾病。患者一旦出现视力下降、视物模糊、眼红眼痛等症状就需要及时就医，青光眼对视力的损害是不可逆转的，最终可能导致失明。青光眼的病理基础是眼压升高，眼压的调节功能会受到影响，视物模糊会使患者以为自己只是看花眼了。患者往往通过眼部不适症状判断自己是否患有青光眼，这是一种非常主观的判断方法。那么青光眼有哪些症状呢？

简介：目的探讨重组内皮抑素(Endostatin)对兔角膜新生血管(cornealneovascularization,CNV)形成的影响.方法新西兰白兔18只,随机分为三组,每组6只12眼,采用角膜缝线法制备兔CNV模型,其中两组分别以浓度为10μg/ml、50μg/ml重组内皮抑素点眼,4次/d,连续19d,并以生理盐水点眼作对照.CNV生长面积采用计算机图像分析系统进行分析比较.结果10μg/ml、50μg/ml重组内皮抑素实验组自第7d开始CNV平均生长面积明显低于对照组(P＜0.05),两实验组CNV面积比较,差异无显著意义(P＞0.05).角膜组织病理学检查,实验组新生血管明显稀少,实验组与对照组炎性细胞成分及浸润程度相似.结论浓度10μg/ml、50μg/mlml重组内皮抑素具有明显抑制角膜新生血管生长的作用,而无毒副作用,为临床防治CNV提供了一种新的途径.

简介：AIM:Tocomparetheregularityandaccuracyoflaserinsitukeratomileusis(LASIK)flapscreatedbytheZiemerFEMTOLDV'Classic'(Ziemer'Classic')andZiemerFEMTOLDVCrystalLinefemtosecondlaser(ZiemerCrystalLine).METHODS:Fourier-domainopticalcoherencetomography(RTVueOCT)wasusedtomeasurethemorphologyof200LASIKflapsof100consecutivepatientscreatedwiththeZiemerClassic(100flaps)ortheZiemerCrystalLine(100flaps)atoneweekpostoperatively.Flapthicknesswasevaluatedat36specifiedmeasurementpointsoneachflap.Forallprocedureswithbothlasers,thenominalflapthicknesswas110μm.RESULTS:ThemeanflapthicknessoftheZiemerCrystalLinegroup(102.49±2.68μm)wasthinnerthanthatoftheZiemerClassicgroup(107.65±5.09μm)(P<0.01).Averagethicknessofallflapswasuniformwithin4μmatallmeasurementpoints.TheflapsintheZiemerCrystalLinegroupweremoreregularthanthoseintheZiemerClassicgroupwhenmeasuredfromthecentertotheperiphery.Themaximumdeviationfromthenominal110μmof36measurementswas8μmintheZiemerClassicgroup,whileintheZiemerCrystalLinegroupitwas9μm.Withinthe3600measurementsonthe100eyes,differencesgreaterthan20μmwereobserved0.14%intheZiemerClassicgroup,and0.04%intheZiemerCrystalLinegroup.CONCLUSION:TheflapscreatedwiththeZiemerFEMTOLDVCrystalLinefemtosecondlaseraremoreuniformandthinnerthanthosecreatedbytheZiemerFEMTOLDVClassicfemtosecondlaser.

简介：目的构建肺炎链球菌自溶素（pneumococcalautolysin，LytA）核酸疫苗，并研究其免疫原性。方法采用聚合酶链反应方法从肺炎链球菌基因组中克隆肺炎链球菌自溶素基因，然后将该基因插入到pVAX1真核表达载体中，构建表达LytA的重组质粒，制备成超螺旋比例大于90％的核酸疫苗。实验组：BALB／c小鼠5只，对其分3次肌内注射核酸疫苗（100μg）；对照组：BALB／c小鼠5只，肌内注射pVAX1空载体（100μg）3次。分别采集小鼠血清，采用间接酶联免疫吸附方法测定血清LytA特异性抗体水平。结果扩增出的LytA基因（957bp）与基因库中LytA的编码序列（957bp）一致。成功构建了LytA核酸疫苗。实验组小鼠的血清LytA抗体水平明显高于对照组，差异有统计学意义（P〈0．01）。结论成功克隆了LytA基因，制备了LytA核酸疫苗，后者可在小鼠体内诱导较强的特异性体液免疫反应。

简介：目的观察曲伏前列素滴眼液用于超声乳化白内障吸除术后的残余慢性闭角型青光眼的降眼压效果。方法回顾性观察超声乳化术后眼压控制不满意的慢性闭角型青光眼15例（15只眼）。测量日眼压曲线后给予每晚1次0．004％曲伏前列素滴眼液滴眼。分别于用药1周、4周、8周时测量日眼压曲线，比较用药前后的眼压峰值及眼压波动幅度。结果用药前平均眼压峰值（23．83±3．74）mmHg（1mmHg=0．133kPa），用药1周后眼压峰值平均为（15．25±3．71）mmHg，眼压下降幅度36．0％，眼压峰值下降明显，差异有统计学意义（P〈0．01）。用药后1周眼压波动幅度下降，差异有统计学意义（P〈0．01）。用药后眼压控制平稳，未见全身及局部严重不良反应。结论曲伏前列素滴眼液是治疗超声乳化术后残余慢性闭角型青光眼的安全、有效药物。（中国眼耳鼻喉科杂志，2010，10：227-228）

简介：目的：观察不同浓度葛根素对体外培养的牛视网膜血管内皮细胞舒缩因子的影响。方法：取第8代牛视网膜血管内皮细胞用于实验。实验组中加入含不同浓度葛根素的培养液,对照组加入不含药物、无生长因子及血清的培养液。培养48h后用Westernblotting法测各组细胞eNOS及ET-1的表达。结果：与阴性对照组比较,葛根素组eNOS的相对表达量均升高（P〈0.01）,且随着药物浓度的增加eNOS的表达也增加。葛根素组ET-1的相对表达量均降低（P〈0.01）,且随着药物浓度的增加ET-1表达下降。结论：葛根素通过上调eNOS的表达,下调ET-1的表达,调节血管一氧化氮内皮素（NO/ET）的比值,从而发挥松弛视网膜血管平滑肌的作用。

简介：AIM:Toinvestigatetheaccuracyofintraocularpressure(IOP)asmeasuredbyaReichertOcularResponseAnalyzer(ORA),aswellastherelationshipbetweencentralcornealthickness(CCT)andIOPasmeasuredbyORA,Goldmannapplanationtonometry(GAT),anddynamiccontourtonometry(DCT).·METHODS:Atotalof158healthyindividuals(296eyes)werechosenrandomlyformeasurementofIOP.AfterCCTwasmeasuredusingA-ultrasound(A-US),IOPwasmeasuredbyORA,GAT,andDCTdevicesinarandomizedorder.TheIOPvaluesacquiredusingeachofthethreetonometrieswerecompared,andtherelationshipbetweenCCTandIOPvalueswereanalyzedseparately.TwoIOPvalues,Goldmann-correlatedIOPvalue(IOPg)andcorneal-compensatedintraocularpressure(IOPcc),weregotusingORA.ThreegroupsweredefinedaccordingtoCCT:1)thincornea(CCT<520μm);2)normal-thicknesscornea(CCT:520-580μm);and3)thickcornea(CCT>580μm)groups.·RESULTS:Innormalsubjects,IOPmeasurementswere14.95±2.99mmHgwithORA(IOPg),15.21±2.77mmHgwithORA(IOPcc),15.22±2.77mmHgwithGAT,and15.49±2.56mmHgwithDCT.Meandifferenceswere0.01±2.29mmHgbetweenIOPccandGAT(P>0.05)and0.28±2.20mmHgbetweenIOPccandDC(P>0.05).TherewasagreatercorrelationbetweenIOPccandDCT(r=0.946,P=0.000)thanthatbetweenIOPccandGAT(r=0.845,P=0.000).DCThadasignificantcorrelationwithGAT(r=0.854,P=0.000).GATwasmoderatelycorrelatedwithCCT(r=0.296,P<0.001),whileIOPccshowedaweakbutsignificantcorrelationwithCCT(r=0.155,P=0.007).TherewasastrongnegativecorrelationbetweenCCTandthedifferencebetweenIOPccandGAT(r=-0.803,P=0.000),withevery10increaseinCCTresultinginanincreaseinthisdifferenceof0.35mmHg.Thethickcorneagroup(CCT>580μm)showedtheleastsignificantcorrelationbetweenIOPccandGAT(r=0.859,P=0.000);whilethethincorneagroup(CCT<520μm)hadthemostsignificantcorrelationbetweenIOPccandGAT(r=0.926,P=0.000).ThecorrelateddifferencesbetweenIOPccan

简介：肥胖是阻塞性睡眠呼吸暂停低通气综合征的高危发病因素，而瘦素是调节代谢与能量摄入平衡的一类激素，是肥胖的对抗激素。本文就瘦素与阻塞性睡眠呼吸暂停低通气综合征的相关研究作一综述。

简介：AIM:Toassesstheeffectofmyopiaonthethicknessofretinalnervefiberlayer(RNFL)measuredby3Dopticalcoherencetomography(3D-OCT)inagroupofnonglaucomatousChinesesubjects.METHODS:Twohundredandfifty-eighteyesof258healthyChinesemyopicindividualswererecruitedandfourgroupswereclassifiedaccordingtotheirsphericalequivalent(SE):lowmyopia(n=42,-0.50

简介：目的：观察多西环素对碱烧伤大鼠角膜炎症细胞浸润的抑制作用。方法：健康SD大鼠32只，随机分为对照组、多西环素组，每组16只大鼠。建立角膜碱烧伤模型后，多西环素组予3g／L多西环素眼液点眼，对照组予眼液溶媒点眼。分别于碱烧伤后第3，7，14，21d观察计算炎症指数，角膜取材后进行病理切片及炎症细胞计数，行ICAM-1的ELISA检测。结果：多西环素组各时间点结膜充血、角膜水肿较对照组轻，炎症指数均明显低于对照组，差异有统计学意义（P〈0．05）。多西环素组各时间点炎症细胞计数少于对照组（P〈0．05）。多西环素组各时间点大鼠角膜的ICAM-1表达低于对照组（P〈0．05）。结论：多西环素可以抑制碱烧伤大鼠角膜的炎症细胞浸润，其机制可能是抑制ICAM-1的表达。

简介：目的探索FFA中前房荧光素渗漏情况在新生血管性青光眼治疗中的临床意义。方法对120例,136眼缺血性视网膜病变患者行FFA检查,观察前房荧光素渗漏情况。结果其中68例,78眼前房有不同程度的荧光渗漏。结论FFA中观察前房荧光素渗漏情况在新生血管性青光眼的早期诊断、提示预后中起到积极的作用。

简介：目的明确前列腺素E1等药物对神经性耳鸣的疗效及观察其不良反应.方法对381例神经性耳鸣患者分别使用前列腺素E1、盐酸培他啶、尼莫地平,静脉给药后对其疗效进行观察、分析.结果前列腺素E1、盐酸培他啶、尼莫地平静脉给药后的总有效率分别是82.5%、71.8%、71.3%.疗效与病程有关.结论大多数神经性耳鸣患者对上述药物治疗是有效的.其中前列腺素E1具有疗程价格低廉、疗效高、安全、使用方便等相对优点.