简介:目的比较急性中心性浆液性脉络膜视网膜病变(CSC)的患侧与对侧眼视网膜频域相干光断层扫描(OCT)的图像特征。方法应用频域OCT对30例(60眼)单眼发病急性CSC患者患侧和对侧眼的黄斑部视网膜显微结构进行检测,比较患侧组与对侧组黄斑中心凹外核层厚度、光感受器层(IS/OS层)、视网膜色素上皮(RPE)形态差异。结果所有30例患者患侧眼均有不同程度黄斑部视网膜浆液性脱离,对侧眼中有4眼(13.3%)存在轻度视网膜浆液性脱离;患侧组黄斑中心凹外核层厚度均值为(95.32±24.87)μm,对侧组为(98.80±14.36)μm,两组差异无统计学意义(t=1.627,P=0.110)。患侧组中IS/OS层厚度均匀一致者12眼(40.0%),对侧组20眼(66.7%);患侧组IS/OS层厚度均匀一致伴内外节缺损、不均、凸起增厚者共18眼(60.O%),对侧组共10眼(33.3%),差异有统计学意义(X2=4.28,P=0.038)。患侧组中出现RPE异常者有24眼(80.0%),对侧组中有8眼(26.7%),差异有统计学意义(x。=17.143,P=0.000)。结论频域OCT能清晰显示急性CSC患者的细微病理结构改变,单眼发病CSC患者中一部分对侧眼存在IS/OS层和RPE异常,但是其发生率较患侧眼低。(中国眼耳鼻喉科杂志,2013,13:165—167)
简介:目的探讨总结白内障扶贫复明术中“灌注液迷流综合征”的原因及处理方法。方法本院2011-2013年间参与防盲民生工程,共有31例患者发生“灌注液迷流综合征”,临床表现为突发性眼压升高、浅前房、虹膜脱出,通过注入黏弹剂以及升高灌注瓶高度无法维持前房深度,术中检查未发现眼内出血现象,其中7例发生在水分离和水分层后,24例发生在皮质吸出过程中。所有发生灌注液迷流综合征的患者均暂停手术,给予20%甘露醇250ml静脉滴注,若经药物降压无效,可根据手术条件行经平坦部前段玻璃体切割术或玻璃体腔穿刺术,待前房形成后继续进行手术。结果31例患者中,29例经甘露醇静滴治疗后前房形成,继续完成手术,2例经药物降压仍不能形成前房,经平坦部行前段玻璃体切割术后前房形成,继续完成手术。术后1天裸眼视力0.3~1.0者为20例(20眼),视力0.1~0.3者为8例(8眼),视力0.02~0.1者为3例(3眼),眼压高于或等于21mmHg者10例(10眼),发生角膜水肿者14例(14眼)。术后1周裸眼视力0.3~1.0者为24例(24眼),视力0.1~0.3者为7例(7眼),眼压均恢复正常,无角膜水肿发生。结论小切口白内障囊外摘除术中灌注液迷流综合征是一种少见的术中并发症,经正确处理可以缓解突发性眼压升高引起的各种体征,顺利完成手术。
简介:目的:探讨单侧内直肌截除术治疗儿童残余性和复发性外斜视的有效性及安全性,评价其在不同外斜视类型及不同初次手术方式应用的差异性。方法:回顾性病例系列研究。收集2009-01/2013-02在山东大学附属山东省立医院行单侧内直肌截除术治疗的残余性和复发性外斜视连续性病例48例48眼,观察术后第Id,6wk以及末次随访(术后6~32mo)时患儿眼位、眼位非共同性、融合功能及立体视锐度情况。结果:术后第Id手术正位率为83%(40/48),欠矫率为4%(2/48),过矫率为13%(6/48);术后第6wk手术正位率为81%(39/48),欠矫率为13%(6/48),过矫率为6%(3/48);末次随访时正位率为75%(36/48),欠矫率为25%(12/48),无1例过矫。不同初次手术方式和不同外斜视类型患儿末次随访时手术正位率的差异均无统计学意义(P=0.168、0.50)。术后所有病例均未出现眼球运动非共同性和眼球外转受限。结论:单侧内直肌截除术是治疗儿童残余性和复发性外斜视的安全有效术式,其在不同外斜视类型及不同初次手术方式应用的疗效无差异。
简介:目的分析常年性变应性鼻炎的狗、猫上皮变应原皮肤点刺试验的阳性结果,对其他气传变应原的反应性,并进一步探讨环境接触与其相关性。方法总结1022例常年性变应性鼻炎患者采用阿罗格叶7种气传变应原标准化试液进行的皮肤点刺试验;分析狗、猫上皮变应原的皮试结果及合并其他气传变应原阳性的比例;并根据是否有环境接触分类,比较各组在阳性率分布上的差异。结果常年性变应性鼻炎中狗上皮变应原皮试阳性占13.80%,猫上皮阳性占6.95%;且98%以上合并其他气传变应原阳性,尤以合并粉尘螨、屋尘螨阳性居多。其中21.93%和26.32%环境接触狗/猫的变应性鼻炎相应狗/猫上皮变应原皮试阳性;无环境接触组的阳性率分别为12.78%和6.58%,差异均有统计学意义(P〈0.01)。结论常年性变应性鼻炎的狗上皮及猫上皮的阳性率位居前列,其中绝大多数合并其他气传变应原阳性。鉴于环境接触对狗、猫上皮过敏的高危险性,变应性鼻炎患者应该尽可能地避免饲养、接触宠物。
简介:AIM:TotrainTibetanmonkey(Macacathibetana)forintraocularpressure(IOP)measurementinconsciousstateandobtainnormalIOPinconsciousTibetanMacaque.·METHODS:Thetrainingwasbasedonaward-conditionedbehavior.Foodstimulationandhuman-animalinteractionwereusedinthistraining.·RESULTS:TrainedTibetanmonkeyscalmlyacceptedIOPmeasurementbytheTonoVet?誖reboundtonometerwithoutsedationoranesthesiaandtheirIOPvaluesweresimilartootherprimates.·CONCLUSION:Human-cultivatedThibetanmonkeysaretamable,andcanbeusedforbiomedicalresearchsuchasophthalmicresearchwithoutanesthesia.
简介:AIM:ToevaluatetheefficacyofSeprafilmtransplantationfollowingadhesiolysisforpreventingpostoperativereadhesionandimprovingsurgicaloutcomes.METHODS:Primaryblepharoplastywascarriedoutonbotheyelidsof18albinorabbits.After2weeks,anewskinincisionwasmade,andadhesiolysiswasperformedonbotheyelids.Therabbitswerecategorizedintotwogroups,onewithadhesiolysisaloneinthelefteyelid(controlgroup),andtheotherwithadhesiolysiswithaSeprafilmgraftintherighteyelid(Seprafilmgroup).Thedegreesofinflammationandfibrosiswereexaminedwithhematoxylin-eosin(HE)andMasson’strichromestains.Expressionofα-smoothmuscleactin(α-SMA)wasalsoimmunohistochemicallyexamined.RESULTS:Eyelidexaminationimmediatelyaftertheoperationrevealedmildswellingandhemorrhageinbothgroups,butthesesymptomsresolvedafter1week-2weeks,andeyelidshapehadrecoveredcompletelyinbothgroups.MicroscopicassessmentsdemonstratedthattheSeprafilmgroupshowedlessinflammationandfibrosisthanthecontrolgroup.TheSeprafilmgroupalsoexhibitedfewerα-SMA-positivecellsthanthecontrolgroup.CONCLUSION:Basedonthesefindings,weconcludethatSeprafilmgraftwithadhesiolysisisaneffectivemethodforpreventingpostoperativereadhesionsaftereyelidsurgery.
简介:·AIM:Toinvestigatethetherapeuticeffectsofnanophtha-locyaninephotosensitizersonanexperimentalratchoroidalneovescularization(CNV)model,aswellastoevaluatethecytotoxicityofwhichonhumanretinalpigmentepithelia(HRPE)andhumanretinalendothelialcells(HRECs).·METHODS:Twotypesofphotosensitizers,G1-ZnPc(COOH)8andG1-ZnPc(COOH)8/mrespectively,wereadministratedforphotodynamictherapy(PDT)afterasuccessfulestablishmentofCNVmodelonBrown-Norway(BN)ratsviafundusphotocoagulation.Thetherapeuticeffectsofthetwodrugswereassessedthroughopticalcoherencetomography(OCT),fluoresceinfundusangiography(FFA)andtransmissionelectronmicroscopy(TEM).Forcytotoxicitytests,cellcountingkit-8(CCK-8)assaysandchangesofmitochondrialtransmembranepotential(△Ψm)wereconductedonHRPEandHRECsafterinitialuptakeofthetwodrugs.·RESULTS:Bothphotosensitizersdemonstratedanimprove-mentofvascularleakageandclosureofCNV1weekafterPDTasconfirmedbyfundusimage,OCT,FFAandTEM.TwoweeksafterPDT,G1-ZnPc(COOH)8/mshowedabetterCNVclosureeffectversusG1-ZnPc(COOH)8(P<0.05).Asignificantdifference(P<0.01)wasfoundinuptakeofthetwodrugsinHRPEandHRECs,withnodifferencebetweenthedrugs(P>0.05).BothphotosensitizersshowedcytotoxicityonHRPE,butG1-ZnPc(COOH)8/minducedalowercellviability.·CONCLUSION:G1-ZnPc(COOH)8/mmediatedPDTisbetterthanG1-ZnPc(COOH)8inCNVclosureandalsohavetheadvantageoffastmetabolismleadingtolesssideeffect.·
简介:AIM:ToevaluatetheeffectofCollagencross-linkingonthepreventionofmeltinginrabbitcorneasafteralkaliburn.·METHODS:TwentyNewZealandwhiterabbitswererandomlydividedintomodelcontrolgroupandcollagencross-linkingtreatmentgroup.Thesecondgroupofrabbitsreceivedcollagencrosslinkedtreatment.Bothgroupswereappliedwithantibioticeyedropstopreventinfection.Thecorneaswereevaluatedformelting,opacity,pathologicalandimmunohistochemistry,recordthechangeswhen28daysaftertheanimalswerekilled.·RESULTS:Inthecontrolgroup,6outof8rabbitsshowedcornealmeltingafterinjury(14±4)days,whiletwocornealperforated.Incollagencross-linkingtreatmentgroup,onerabbitshowedcornealmeltingafterinjury23days,withoutcornealperforation;cornealdissolutionratebetweenthetwogroupswassignificantlydifferent(P<0.05).Pathologicalexaminationsuggestedthatinthetreatmentgroup,mildcornealedema,milddamagetocollagenfibers,inflammatorycellinfiltrationwassignificantlylessthanthecontrolgroup.Immunohistochemistryshowedthatcornealcollagenfibersarrangedinneatrowsinthecontrolgroup.·CONCLUSION:Collagencross-linkingtreatmentnotonlycanpreventanddelaythecornealmeltingafteralkaliburn,butalsocanreducethedestructionofcornealcollagenfibersandinfiltrationofinflammatorycellsinthecornealtissue.
简介:·AIM:Toexploretheeffectofimmunizationwithcopolymer-1(COP-1)andretinalstemcells(RSCs)transplantationoninterferon-gamma(IFN-γ)levelsinaratexperimentalglaucomamodel.·METHODS:Anexperimentalglaucomawasinducedbyargonlaserphotocoagulationoftheepiscleralveinsandlimbalplexusintherighteyeofrats.Immediatelyfollowingglaucomainduction,ratswereimmunizedwithCOP-1.RSCswereculturedandtransplantedintravitreallyintotheeyesofglaucomamodelanimals1weekpost-lasertreatment.Sixexperimentalgroupswereused:COP-1/RSC,PBS/RSC,COP-1/PBS,PBS/PBS,glaucomamodelgroup,andanormalcontrolgroup.TheconcentrationofIFN-γinaqueoushumor(AH)andserumwasmeasuredbyenzyme-linkedimmunosorbentassay(ELISA)ineachofthesixgroups.Retinalganglioncell(RGC)survivalwasassessedbyquantifyingapoptosisusingHoechststaining.·RESULTS:ConcentrationsofIFN-γinAHandserumofratsthathadundergoneglaucomainductionwerehigherthanthoseofnon-inducedcontrolrats.TheconcentrationsofIFN-γinAHandserumoftheCOP-1/RSCstreatedgroupweredeterminedtobe2371.9ng/Land710.9ng/L,respectively,whichweresignificantlylowerthanthoseintheothertreatedgroups(P<0.05).Infact,IFN-γlevelsinthedualtreatedgroupwerereducedtobackgroundlevels.TheCOP-1/RSCgrouphadlowernumberofapoptoticRGCsthantheotherthreeexperimentalgroups(P<0.05).·CONCLUSION:ThereducedlevelsofIFN-γinAHandserumoftheCOP-1/RSCgroupmayberelatedtosynergisticeffectsbetweenRSCstransplantationandCOP-1immunemodulation.ItislikelythatthelowerlevelsofIFN-γpreventedRGCsglaucomatousapoptosis.·