简介：青光眼是全球第二大致盲眼病,是不可逆性盲最主要原因,而原发性闭角型青光眼（primaryangleclosure[1]glaucoma,PACG）是我国最主要的青光眼类型。原发性闭角型青光眼（PACG）的发病机制复杂。PACG发病的主要危险因素是晶状体位置偏前、前房变浅而导致的瞳孔阻滞。此外,周边虹膜肥厚以及睫状体位置前移也是PACG发病的常见危险因素。

简介：目的：研究近视患者LASIK术后视疲劳的发生与融合范围的关系，及同视机融合功能训练改善LASIK术后视疲劳的疗效观察。方法：对60例120眼近视患者（．1．50--8．00D）施行LASIK手术，于术前戴全矫眼镜用同视机法测定融合范围，并进行视疲劳的问卷调查。术后将其随机平分为两组：A组进行同视机融合功能训练30d，B组不进行同视机融合功能训练，分别对其术后1wk；1mo行同视机法测定融合范围，并进行视疲劳的问卷调查及统计学分析。结果：A、B组术后融合范围均较术前减小。术后1wk时融合范围两组分别为18．58±8．91和13．45±8．87，二者差异有统计学意义（P〈0．05）。术后1mo时，两组融合范围分别为20．55±7．23和18．12±6．10，二者差异无统计学意义。术后1wk时A组视疲劳评分3．92±1．65，B组评分5．16±2．34，二者差异有统计学意义（P〈0．05）。术后1mo时两组评分分别是1．28±0．96和1．45±0．99分，二者差异无统计学意义。结论：近视眼LASIK术后双眼的融合功能下降是出现视疲劳的一个重要因素。术后早期进行同视机融合功能训练可以有效的改善视疲劳症状。

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:ToevaluatetheefficacyofSeprafilmtransplantationfollowingadhesiolysisforpreventingpostoperativereadhesionandimprovingsurgicaloutcomes.METHODS:Primaryblepharoplastywascarriedoutonbotheyelidsof18albinorabbits.After2weeks,anewskinincisionwasmade,andadhesiolysiswasperformedonbotheyelids.Therabbitswerecategorizedintotwogroups,onewithadhesiolysisaloneinthelefteyelid(controlgroup),andtheotherwithadhesiolysiswithaSeprafilmgraftintherighteyelid(Seprafilmgroup).Thedegreesofinflammationandfibrosiswereexaminedwithhematoxylin-eosin(HE)andMasson’strichromestains.Expressionofα-smoothmuscleactin(α-SMA)wasalsoimmunohistochemicallyexamined.RESULTS:Eyelidexaminationimmediatelyaftertheoperationrevealedmildswellingandhemorrhageinbothgroups,butthesesymptomsresolvedafter1week-2weeks,andeyelidshapehadrecoveredcompletelyinbothgroups.MicroscopicassessmentsdemonstratedthattheSeprafilmgroupshowedlessinflammationandfibrosisthanthecontrolgroup.TheSeprafilmgroupalsoexhibitedfewerα-SMA-positivecellsthanthecontrolgroup.CONCLUSION:Basedonthesefindings,weconcludethatSeprafilmgraftwithadhesiolysisisaneffectivemethodforpreventingpostoperativereadhesionsaftereyelidsurgery.

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.·