简介：AIM:Toinvestigatethepossiblerelationshipbetweentheinfluencingfactorsoccurringbeforeandduringbirthinfull-terminfantsandtheoutcomeofretinopathy.·METHODS:Totally816full-terminfantsadmittedintheneonateintensiveunitofBoaiHospitalofZhongshanbetween1May,2008and30June,2011wereincludedinthestudy.Fundusexaminationwasperformedandevaluatedindividuallyonthemattheageof48hoursafterdelivery,2weeksand1month.Somepossibleriskfactorshappeningprenatallyorduringdeliverysuchaspregnantrelatedhypertension,placentaprevia,placentalabruptionetc,aswellassomeneonatalriskfactorssuchasneonatalasphyxia,hypoxic-ischemicencephalopathy(HIE),lowbirthweightetc,wererecordedandevacuated.Thentheeffectoftheriskfactorsoffull-terminfantsonretinopathywasstudied.·RESULTS:Theincidenceofretinalhemorrhageoffull-terminfantswithprenatalpregnantrelatedhypertension(PRH)ofthemother(43.6%)wassignificantlyhigherthanthatoffull-terminfantswithout(8.0%).(P<0.001).Theincidenceofretinalhemorrhageoffull-terminfantswithneonatalasphyxiaand/orhypoxic-ischemicencephalopathy(HIE)(29.3%)wassignificantlyhigherthanthatofthosewithout(15.7%),butcorrelationwasnotfoundbetweentheseverityofretinahemorrhageandthedegreeofhypoxicdisease.Apalecolorofopticdiscwasassociatedwithalowbirthweightoffull-terminfant.Full-terminfantswithbirthweighlessthan2500ghadasignificanthigherincidenceofretinopathythanthosewithbirthweightequalormorethan2500g(P<0.001).·CONCLUSION:Themaininfluencingfactorswhichleadtoretinopathyofhighriskfull-terminfantsareprenatalfactorssuchasPRH,andsomeneonatalriskfactorssuchasasphyxia,hypoxic-ischemicencephalopathy,andlowbirthweight.

简介：AIM:Tocharacterizetheclinicalfeatures,diagnosis,treatmentandprognosisofuveitisassociatedwithankylosingspondylitis(AS)inChinesepatients.·METHODS:TwohundredandthreepatientswithuveitisassociatedwithASfollowed-upintheThirdMilitaryMedicalUniversityDapingHospitalbetween2005and2010wereretrospectivelyevaluatedinthisstudy.Completeophthalmologicalexaminationswereevaluatedatbaselineandduringthefollow-upperiod.Thegender,age,follow-uptime,meanfrequencyofuveitisonset,andaccompanyingeyeexaminationfindings,history,demographicalparameterswerereviewed.Allthepatientspresentedcompleteclinicalandradiologic(sacroiliac,lumbar,dorsalandcervicalspine,knee,ankle,shoulder,hip,elbow)evaluation.HLA-B27typingwasalsosearched.·RESULTS:Therewere203patientsdiagnosedwithASassociateduveitis.AllshowedsacroiliacX-raychangesindicativeofAS.Therewere184maleand19femalepatients.Theaverageageofpatientswas35±12(range18-50).Meanfollow-upperiodwas2.4years(1-5years).Acuteanterioruveitiswasthemostcommontypeofuveitisinbothgenders.121eyespresentedunilateralinvolvement(55.2%),and92eyespresentedbilateralinvolvement(45.3%)withonsetalternately.22eyesoccurredhypopyon,16eyeswerefoundanteriorvitreouscells,7eyeswerenotedreactivemacularedemaorexudation,29eyespresentedposteriorsynechiaeofiris,and14eyespresentedcataract,9eyespresentedsecondaryglaucoma,2eyespresentedbendcornealdegenerationand1eyespresentedatrophyofeyeball.Atthefinalvisit,uveitiswaswellcontrolledinmostpatients.·CONCLUSION:ASassociatedwithuveitisinChinesepatientsmainlymanifestsasacuteanterioruveitis.AcombinationofcorticosteroidswithothermydriasisagentsiseffectiveformostASassociatedwithuveitispatients.Ingeneral,theprognosisisgoodinthesecases.

简介：AIM:Tocomparetheeffectoftopicallyadministeredandsubconjunctivallyinjectedbevacizumabonexperimentalcornealneovascularizationinratsfortwoweeksaftertreatment.METHODS:Twenty-eightSprague-Dawleyratsweredividedintofourgroupsof7animals.Eachcornealcenterofrighteyewascauterizedwithsilver/potassiumnitratefor8s.Aftercornealburning,bevacizumab(12.5mg/mL)wastopicallyadministeredthreetimesperday(TBgroup)fortwoweeksorsubconjunctivallyinjectedondays2and4aftercauterization(0.02mL;SBgroup).Asnegativecontrols,ratsreceived0.9%salinetopicallythreetimesperday(TSgroup)orsubconjunctivallyondays2and4(0.02mL;SSgroup).Digitalphotographsofthecorneaweretaken1and2weeksaftertreatmentandanalyzedtodeterminetheareaofcorneacoveredbyneovascularizationasthepercentageofcornealneovascularization.RESULTS:Oneweekaftertreatment,thepercentageofcornealneovascularizationwassignificantlylowerintheTBandSBgroupsthanintheTSandSSgroups(allP<0.05).Twoweeksaftertreatment,thepercentageofcornealneovascularizationwassignificantlylowerintheTBgroupthanintheTSgroup(P<0.05).Inallgroups,thepercentageofneovascularizationwasdecreasingastimepassed(allP<0.05)CONCLUSION:Topicallyadministeredbevacizumabhaslongerstandinganti-angiogeniceffectthansubconjunctivallyinjectedbevacizumabincornealneovascularizationfollowingchemicalinjuryinrats.

简介：Simulationcanbedefinedasmalingering,orsometimesfunctionalvisualloss(FVL).Itmanifestsaseithersimulatinganophthalmicdisease(positivesimulation),ordenialofophthalmicdisease(negativesimulation).Consciousbehaviorandcompensationorindemnityclaimsareprominentfeaturesofsimulation.Sincesomeauthorssuggestthatthisisamanifestationofunderlyingpsychopathology,evenconversionisincludedinthiscontext.Intoday’sworld,everyophthalmologistcanfacewithsimulationofophthalmicdiseaseordisorder.Incaseofsimulationsuspect,thephysician’sresponsibilityistoprovethesimulationconsideringthedisease/disorderfirst,andsimulationasanexclusion.Insimulationexaminations,thephysicianshouldbefirmandsmarttoselectappropriatetest(s)toconvincenotonlythesubject,butalsothejudgeincaseofindemnityorcompensationtrials.Almostallophthalmicsensoryandmotorfunctionsincludingvisualacuity,visualfield,colorvisionandnightvisioncanbethesubjectofsimulation.Examinermustbeskillfulinselectingthemostappropriatetest.Apartfromthoseintheliterature,weincludedallkindsofsimulationinophthalmology.Inaddition,simulationexaminationtechniques,suchas,useofOCT(opticalcoherencetomography),frequencydoublingperimetry(FDP),andmodifiedpolarizationtestswerealsoincluded.Inthisreview,wemadeathoroughliteraturesearch,andaddedourexperiencestogivethereadersup-to-dateinformationonmalingeringorsimulationinophthalmology.

简介：AIM:ToinvestigatethesideeffectsofthecommonlyusedlasertreatmentalongwithtestingtheneuroprotectiveeffectofbFGFonapotentialretinalimpairment.METHODS:Todothis,30chinchillapigmentedadultmalerabbitsweredividedintothecontrolandexperimentalgroups.ThecontrolandexperimentalgroupsunderwentbothlaserapplicationandbFGFtreatment.Theretinaltissueimpairmentanditsrenewalrateweretestedunderthelightandelectronmicroscopicallevels.RESULTS:Thefocallaserapplicationonrabbiteyescausedmorphologicalalterationsbothintheapplicationregionandintheneighbouringareas.Inthedamagedareas,theouternuclearlayeroftheneuralretinawasalmostdisappeared,retinapigmentepitheliumwasinterrupted,theretinapigmentepitheliummigratedintraretinally,andthedamagedregionalongwithneighbouringareasseemedtobenotseparated.bFGFapplicationjustafterthelaserphotocoagulation,revealedbetterresultsinapplicationareas.CONCLUSION:ItcouldbesuggestedthatthebFGFapplicationfollowinglaserphotocoagulationmighthaveprotective,repairingandwoundhealingeffectsontheretina.

简介：AIM:ToinvestigatetheroleofRho-associatedproteinkinase(ROCK)inhibitor,Y27632,inmediatingtheproductionofextracellularmatrix(ECM)componentsincludingfibronectin,matrixmetallo-proteinase-2(MMP-2)andtypeIcollagenasinducedbyconnectivetissuegrowthfactor(CTGF)ortransforminggrowthfactor-β(TGF-β)inahumanretinalpigmentepithelialcellline,ARPE-19.METHODS:TheeffectofY27632ontheCTGForTGF-βinducedphenotypeinARPE-19cellswasmeasuredwithimmunocytochemistryasthechangeinF-actin.ARPE-19cellsweretreatedwithCTGF(1,10,100ng/mL)andTGF-β(10ng/mL)inserumfreemedia,andanalyzedforfibronectin,laminin,andMMP-2andtypeIcollagenbyRT-qPCRandimmunocytochemistry.CellswerealsopretreatedwithanROCKinhibitor,Y27632,toanalyzethesignalingcontributingtoECMproduction.·RESULTS:TreatmentofARPE-19cellsinculturewithTGF-βorCTGFinducedanECMchangefromacobblestonemorphologytoamoreelongatedswirlpatternindicatingamesenchymalphenotype.RT-qPCRanalysisanddifferentgeneexpressionanalysisdemonstratedanupregulationinexpressionofgenesassociatedwithcytoskeletalstructureandmotility.CTGForTGF-βsignificantlyincreasedexpressionoffibronectinmRNA(P=0.006,P=0.003respectively),lamininmRNA(P=0.006,P=0.005),MMP-2mRNA(P=0.006,P=0.001),COL1A1mRNA(P=0.001,P=0.001),COL1A2mRNA(P=0.001,P=0.001).PreincubationofARPE-19withY27632(10mmol/L)significantlypreventedCTGForTGF-βinducedfibronectin(P=0.005,P=0.003respectively),MMP-2(P=0.003,P=0.002),COL1A1(P=0.006,P=0.003),andCOL1A2(P=0.006,P=0.004)geneexpression,butnotlaminin(P=0.375,P=0.516).CONCLUSION:OurstudydemonstratedthatbothTGF-βandCTGFupregulatetheexpressionofECMcomponentsincludingfibronectin,laminin,MMP-2andtypeIcollagenbyactivatingtheRhoA/ROCKsignalingpathway.Duringthisprocess,ARPE-19cellswereshowntochangefromanepithelialtoamesenchymalphenotypeinvi

简介：AIM:Toevaluatetheaccuracyofsphericalequivalent(SE)estimatesofadouble-passsystemandtocompareitwithretinoscopy,subjectiverefractionandatablemountedautorefractor.METHODS:Non-cycloplegicrefractionwasperformedon125eyesof65healthyadults(age23.5±3.0years)fromOctober2010toJanuary2011usingretinoscopy,subjectiverefraction,autorefraction(AutokeratorefractometerTOPCONKR-8100,Japan)andadoublepasssystem(OpticalQualityAnalysisSystem,OQAS,VisiometricsS.L.,Spain).Nineconsecutivemeasurementswiththedouble-passsystemwereperformedonasubgroupof22eyestoassessrepeatability.ToevaluatethetruenessoftheOQASinstrument,theSElaboratorybiasbetweenthedoublepasssystemandtheothertechniqueswascalculated.RESULTS:TheSEmeancoefficientofrepeatabilityobtainedwas0.22D.SignificantcorrelationscouldbeestablishedbetweentheOQASandtheSEobtainedwithretinoscopy(r=0.956,P<0.001),subjectiverefraction(r=0.955,P<0.001)andautorefraction(r=0.957,P<0.001).ThedifferencesinSEbetweenthedouble-passsystemandtheothertechniquesweresignificant(P<0.001),butlackedclinicalrelevanceexceptforretinoscopy;Retinoscopygavemorehyperopicvaluesthanthedouble-passsystem-0.51±0.50Daswellasthesubjectiverefraction-0.23±0.50D;Moremyopicvalueswereachievedbymeansofautorefraction0.24±0.49D.CONCLUSION:Thedouble-passsystemprovidesaccurateandreliableestimatesoftheSEthatcanbeusedforclinicalstudies.Thistechniquecandeterminethecorrectfocuspositiontoassesstheocularopticalquality.However,ithasarelativelysmallmeasuringrangeincomparisonwithautorefractors(-8.00to+5.00D),andrequirespriorinformationontherefractivestateofthepatient.

简介：AIM:ToevaluatethecornealendothelialcelldensityandmorphologyinChinesepatientswithpseudoexfoliationsyndrome(PEX).·METHODS:Medicalrecordsof16patients(20eyes)withPEXwhopresentedtoourinstitutionbetweenJuly2008andJune2010wereretrospectivelyreviewed.Thirteeneyeshadcombinedglaucoma.Theinformationoffiveapparentlynormalfelloweyesinthesepatientswasalsorecorded.Lefteyesof20patientswithbilateralsenilecataractsbutnoothereyediseasewereincludedascontrols.Specularmicroscopywasperformedinalleyestoanalyzeforcornealendothelialcelldensityandmorphology.Celldensity,coefficientofvariationincellsize,andpercentageofhexagonalcellsincornealendotheliumwereevaluated.·RESULTS:ThemeancornealendothelialcelldensityinthePEXeyeswas2298±239cells/mm2,significantlylowerthanthatinthecataracteyes(2652±18cells/mm2,P=0.026),buttherewerenosignificantdifferencesincoefficientofvariationofcellsizeandfrequencyofhexagonalitybetweenthesetwogroups.NosignificantdifferencesinthethreeparameterswerefoundbetweentheapparentlynormalfelloweyesandthePEXeyesorthecataracteyes,orbetweenthePEXeyeswithandwithoutglaucoma.·CONCLUSION:CornealendothelialcelldensitymaydecreaseinChinesepatientswithPEX.ThedevelopmentofglaucomainPEXeyesdoesnotseemtoberelatedwiththechangeincornealendothelialcelldensityormorphology.

简介：沙眼是由沙眼衣原体感染所致的一种传染性角结膜炎,目前在世界57个国家流行。1998年世界卫生组织（WorldHealthOrganization,WHO）将2020年全球消灭致盲性沙眼（globalalliancetoeliminateblindingtrachomaby2020,GET＆nbsp；2020）列为其防盲工作的主要目标之一。世界卫生组织制定了辨认和命名沙眼的简化分级系统及以社区干预为基础的防治沙眼的SAFE策略,此后10余年各国对此策略进行了不断推广、执行,目前世界上沙眼的流行趋势较之此前有了一定的变化,我国也启动了“计划2016年前在中国根治致盲性沙眼”的防盲工作。本文就SAFE策略推广以来沙眼诊断、治疗及流行趋势等方面的进展做一综述。

简介：AIM:Toevaluatetheefficacy,safetyandstabilityofposteriorchamberphakicintraocularlensimplantationforthecorrectionofhighmyopia.METHODS:Retrospectivecasereviewof82eyes(43patients)undergoingimplantableColiamerlens(ICL)placementbyasinglesurgeon(Xiao-WeiGao)tocorrectpreoperativemeansphericalequivalentsbetween-9.00diopter(D)and-23.00D.Mainoutcomemeasuresincludeduncorrectedvisualacuity(UCVA),refraction,bestspectacle-correctedvisualacuity(BSCVA),endothelialcelldensity(ECD),intraocularpressure(IOP),lenstransparency,postoperativeuveitis.Visanteanteriorsegmentopticalcoherencetomography(AS-OCT)wasusedtomeasureanteriorchamberdepth(ACD)andthepositionofICL.RESULTS:Meanfollow-upwas6.54±3.26months(range3-12months).Predictabilityofthemanifestsphericalequivalent(SE)refractiontowithin±1.OODwasachievedin88%ofeyesand±0.50Din72.5%ofeyes.ThemeanpostoperativemanifestSErefractionwas-1.85±0.72D,with96.34%ofeyesmaintainingorgaining≥1line(s)ofBSCVA.Themean3-monthpostoperativeECDdecreasedbuthadnostatisticallydifferencecomparedwiththepreoperativeECD.Ofthe7eyes(8.54%)withamildtransientincreaseinintraocularpressure(upto30mmHg),nonerequiredasecondsurgicalprocedureorprolongedtopicalmedication.Therewasnolossoflenstransparency.Pigmentedprecipitateswereobservedin5eyes(6.09%).ThemeanpreoperativeACDmeasuredwithAS-OCTwas3.28±0.14mm,threemonthsaftersurgery,themeanACDwas2.45±0.22mm.Anteriorchamberdepthshowedastatisticallysignificantreduction.Oneeye(1.22%)hadICLspontaneousrotation,81eyes(98.78%)ofthelensremainedcorrectlycentered.CONCLUSION:TheimplantationofICLisaneffectivesurgicaloptionforthemanagementofhighmyopia.Butitslongtimeeffectandsafetystillneedmoretimetoprove.

简介：AIM:Todeterminewhethersinglenucleotidepolymorphism(SNP)rs641153isassociatedwiththeriskofage-relatedmaculardegeneration(AMD),weperformedasystematicmeta-analysisof15eligiblestudies.SNPinthecomplementfactorB(CFB)geneisconsideredtohavesignificantassociationwithAMDsusceptibility,butthereisgreatdiscrepancyintheseresults.METHODS:TheeligiblestudieswereidentifiedbysearchingthedatabasesofPubMed,EMBASE,andWebofScience.Oddsratios(ORs)with95%confidenceintervals(CIs)wereusedtoassesstheassociation.AlldatawereanalyzedusingStatasoftware.RESULTS:Theassociationbetweenrs641153andAMDriskwasstatisticallysignificantunderthehomozygousmodel(AAvsGG:OR=0.26,95%CI=0.15-0.45,P_h=0.973,/~2=0.0%,fixedeffects),dominantmodel(AA+GAvsGG:OR=0.49,95%CI=0.40-0.59,P_h=0.004,/~2=56.4%,randomeffects)andrecessivemodel(AAvsGA+GG:OR=0.30,95%CI=0.17-0.51,R_n=0.983,I~2=0.0%,fixedeffects).Thesameresultswerealsoobservedinthestratifiedanalysesbyethnicity,sourceofcontrolandsamplesize.CONCLUSION:Ourmeta-analysissuggeststhatrs641153intheCFBgenemayplayaprotectiveroleinAMDsusceptibility,thelateAMDinparticular,bothinCaucasiansandinAsians.

简介：验光的目的在于获得清晰的视力,舒适的阅读跟持久的用眼。双眼平衡检查是指在验光时分别测得单眼MPMVA是否支持双眼同时的视觉活动加以检验和调整,最终达到使屈光不正者获得双眼屈光平衡及调节平衡,使屈光不正者真正获得清晰、舒适和持久的视力。双眼平衡的方法包括,棱镜分离法,交替遮盖法,偏振分离法,以及偏振红绿法等。

简介：医疗系统的前景是什么？作为眼科医疗工作者,我们不仅要治疗眼睛,我们更要治疗患者。同样,眼科医疗并非在真空中作业,而是从属于更宽泛的医疗保健系统。当我们的工作需要如此之多的人力之时,很可能让人忘记工作的大背景是什么。然而,

简介：干眼症是十分常见的眼表疾病,其发病机制至今尚未明确.近年来的研究表明基于免疫的炎症反应可能是各种类型干眼症发病的共同机制.泪腺及眼表面的炎症可导致泪腺及眼表上皮细胞损伤及凋亡、泪液中水样液及黏液的分泌减少,而性激素水平的异常可能是导致此炎症反应发生的重要因素,本文复习了以上热点问题的相关文献作一综述.

简介：过敏性眼表疾病是眼科门诊常见的眼部炎症。由于眼表暴露在各种各样的过敏原下,使眼部易导致过敏性反应。过敏性眼部疾病最特征的表现是眼部的瘙痒感,表现为双侧性,临床表现因人而异。

简介：Endogenousaspergillusendophthalmitis(EAE)afterkidneytransplantisararebutimportantclinicalproblemduetopotentiallydevastatingconsequences.EarlydiagnosisofEAE,timelyremovalofaffectedvitreousbyvitrectomy,properanti-fungaltreatment,allcontributedtothesuccessfulcontrolofthedisease.TherapeuticsuccessofEAEinpost-transplantpatientsdependslargelyonpromptdiagnosis.DefinitediagnosisofEAEisbasedonpositivecultureresultsofvitreousspecimen,whilefundoscopyandBscanultrasoundmayaidearlydiagnosis.Intermsofanti-fungalmedicine,amphotericinBhaslongbeenthefirstchoice,butitssystemicapplicaitonhassevereadversereactions,especiallyforpatientswithimpairedrenalfunction.Herein,wereportthetreatmentmodalityofEAEafterkidneytransplantwithvitrectomy,systemicadministrationofmicafunginplusvoriconazole,topicalapplicationoffluconazolandamphotercinB.

简介：AIM:Toinvestigatewhether15-Lipoxygenase-1(15-LOX-1)playsanimportantroleintheregulationofangiogenesis,inhibitinghypoxia-inducedproliferationofretinalmicrovascularendothelialcells(RMVECs)andtheunderlyingmechanism.METHODS:PrimaryRMVECswereisolatedfromtheretinasofC57/BL6JmiceandidentifiedbyanevaluationforFITC-markedCD31.ThehypoxiamodelswereestablishedwiththeBio-bagandevaluatedwithablood-gasanalyzer.ExperimentswereperformedusingRMVECstreatedwithandwithouttransferAd-15-LOX-1orAd-vectorbothunderhypoxiaandnormoxiaconditionat12,24,48,72hours.Theefficacyofthegenetransferwasassessedbyimmunofluorescencestaining.CellsproliferationwasevaluatedbytheCCK-8method.RNAandproteinexpressionsof15-LOX-1,VEGF-A,VEGFR-2,eNOsandPPAR-rwereanalyzedbyreal-timereversetranscriptionpolymerasechainreaction(RT-PCR)andWesternblot.RESULTS:RoutineevaluationforFITC-markedCD31showedthatcellswerepure.Theresultsofblood-gasanalysisshowedthatwhenthecultureswereexposedtohypoxiaformorethan2hours,thePo2was4.5to5.4Kpa.WeverifiedRMVECscouldbeinfectedwithAd-15-LOX-1orAd-vectorviaFluorescencemicroscopy.CCK-8analysisrevealedthattheproliferativecapacitiesofRMVECsinhypoxicgroupweresignificantlyhigherateachtimepointthantheywereinnormoxicgroup(P<0.05).Inahypoxiccondition,theproliferativecapacitiesofRMVECsin15-LOX-1groupweresignificantlyinhibited(P<0.05).Real-timeRT-PCRanalysisrevealedthattheexpressionsofVEGF-A,VEGF-R2andeNOsmRNAincreasedinhypoxiagroupcomparedwithnormoxiagroup(P<0.01).However,theexpressionsof15-LOX-1,PPAR-rmRNAdecreasedinhypoxiagroupcomparedwithnormoxiagroup(P<0.01).Italsoshowedthatinahypoxiccondition,theexpressionsofVEGF-A,VEGF-R2andeNOsmRNAdecreasedsignificantlyin15-LOX-1groupcomparedwithhypoxiagroup(P<0.01).However,15-LOX-1andPPAR-rmRNAincreasedsigni

简介：AIM:Todescribethedesignandpreliminaryresultsofthehospitalbasedepidemiologicalstudyfordiabeticretinopathy(HBESDR),anongoingepidemiologicalstudytoestimatetheprevalenceofdiabeticretinopathy(DR)andtoelucidatetheclinical,anthropometric,biochemicalandanyotherriskfactorsassociatedwithdiabeticretinopathy.METHODS:Totally2000diabeteswillberecruitedfromtheDiabeteseyeclinicintheFirstAffiliatedHospitalofChinaMedicalUniversity.AllsubjectsunderwentbloodsugarestimationandOralGlucoseToleranceTesttodiagnosediabetes.Alldiabeteswouldundergocompletequestionnaire,acomprehensiveeyeexamination.Bloodandurinewouldbecollectedforbiochemicalinvestigations.AllfundusphotographsforanyDRwillbegraded.Participantswhoneedtreatmentwillbesenttotheophthalmicclinicandfollow-upintervalprogramforallsubjectswillbesuggested.Acomputerizeddatabaseiscreatedfortherecords.RESULTS:Todate,1174diabeteshavebeenrecruited,therewere350(29.81%)DRinalldiabetes,mostofthemwerewithmildnon-proliferativediabeticretinopathy(NPDR)(139,39.71%);71(20.29%)moderateNPDR,66(18.86%)severeNPDR,74(21.14%)proliferativediabeticretinopathy(PDR).Females,longerdurationofdiabetes,familyhistoryofdiabetesandhypertensionhadastatisticallysignificantincreaseinriskofanyDR.CONCLUSION:ThestudyisexpectedtoprovideanestimateoftheoverallprevalenceofDRandtheprevalencewithdifferentdurationofdiabetesandalsoabetterunderstandingoftheriskfactorsassociatedwithDR.

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：目的比较面神经垂直段CT定位和解剖定位。方法15例开颅取脑后的颅底标本，对面神经管垂直段至外耳道后壁、外耳门后缘、颈静脉窝外侧壁与前壁水平之间距离进行直接测量，并与64层螺旋CT测量进行比较。结果尸骨直接测量与CT测量结果分别是（3．01±0．65）mm与（3．09±0．68）mm，（10．98±1．72）mm与（10．98±1．64）mm，（3．99±1．23）mm与（3．91±1．17）mm，（8．32±1．86）mm与（8．24±1．92）mm；两种方法测量值差异无统计学意义（P〉0．05）。结论CT测量方法可靠，测得值可信。CT扫描有助于明确诊断。