简介：目的设计整体运动知觉检测方法和研究正常人运动知觉特性.方法设计整体运动知觉测试软件,由微机控制,测定20例(40眼)正常人的运动知觉阈值.结果正常人运动知觉功能与性别及眼别无相关关系,而大于与小于50岁组的运动知觉分数值分别为4.47±0.40、4.85±0.16,两者具有显著性差异.结论建立了整体运动知觉检测方法,为临床应用打下了基础.

简介：AIM:Toexaminethemechanismofthedevelopmentofpseudoexfoliation(PSX)syndromeviabothcytokineformationandendothelialvasorelaxingandgrowthfactorsthatwillprovideusnewtherapeuticinsightsforthetreatment.METHODS:Thisisacrosssectionalstudyincludedtwogroups;Group1:controlpatientswithnuclearcataract(n=20,aged51-80years).Group2:PSXpatientswithnuclearcataract(n=18,aged50-90years).Patientswithotherophthalmicproblemsandsystemicdiseaseswereexcluded.Vascularendothelialgrowthfactor(VEGF),interleukin-6(IL-6)andinterleukin-1β(IL-1β)andnitrotyrosinelevelsweredeterminedthroughserumsamplesbyEnzyme-linkedimmunosorbentassay(ELISA)method.Nitrite-nitratelevelsweremeasuredwithphotometricendpointdetermination.RESULTS:Therewerenosignificantdifferencesbetweenthegroupsintermsofage,VEGF,IL-1β,nitrite-nitrateandnitrotyrosine.ThesignificantresultswerethemeanIL-6levelsthatwerehigherinPSXgroup2(37.68±29.52pg/mL)comparedtothatincontrolgroup1(15.32±10.08pg/mL)(P<0.001).CONCLUSION:SeveralinteractingandextendingbiochemicalpathwaysmayleadtothepromotionofVEGFandIL-6expressions.IL-6whichistheonlyalteredmarkerinourstudymayindirectlycauseanincreaseofvascularpermeabilityandneovascularization.WesuggestinflammationasafactorthatcanbeinvolvedinetiopathogenesisofPSX.

简介：AIM:Topresentretinalmicrostructure,metabolismandfunctionabnormalitiesinthecourseofmultipleevanescentwhitedotsyndrome(MEWDS)byHeidelbergspectralismodalityimagingplatformandobserveitsoutcomebyEDI-SD-OCTandtwowavelengthautofluorescence.METHODS:Acaseofmultipleevanescentwhitedotsyndromeina23-year-oldfemalepresentedinitiallywitha15-dayhistoryoffloatersandacentralscotomaintherighteye.Toestablishthediagnosis,multimodalityimagingwasperformed,namely,bluelight-fundusautofluorescence(BL-FAF,excitation488nm,emission>500nm),near-infraredfundusautofluorescence(NIR-FAF,excitation787nm,emission>800nm)usingaconfocalscanninglaserophthalmoscope,fundusfluoresceinangiography(FFA),indocyaninegreenangiography(ICGA),spectrum-domainenhancedepthimagingopticalcoherencetomography(SD-EDI-OCT),multifocalelectroretinography(mf-ERG)andfundusphotograghwereperformedandfollowedupattheeighthmonthafterinitiallyvisiting.RESULTS:Opticalcoherencetomography(OCT)showedatransientdisruptionofthefovealphotoreceptoroutersegmentsincorrespondencetofovealgranularity.NIR-FAFshowedhypoautofluorescentareas,≤40μminsize,mostlyconcentratedaroundtheposteriorpoleanditstemporalsidelessthanthatinBL-FAF.Mf-ERGshowpinnacledisappearedinfoveaandmaculaandresponsesdecreasedmarkedlycomparedwiththefolloweye.Attheeighthmonthfollowup,hyperfluorescenceinBL-FAFweredisappear,while,NIR-FAFHypofluorescentspotsinearlystageofsuchlesionwerereduced.ButOCTdemonstratedthestructurewasrecoveredinresidualHypofluorescentareainNIR-FAF.Thesubfovealchoroidalthicknesswasdecreasedfrom372μmto307μmslightlyandcostlinewasrecovered.CONCLUSION:MEWDSisabenignself-healingdiseaseandthereisnopathologicalevidencetoinvestigatethenaturalcourseofsuchdisease.SD-OCTallowshighlydetailedimagesapproachinghistopathologytocertifythemicrostructura

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：<正>在文献中对白内障手术和人工晶体(IOL)植入后的炎性反应、IOL前纤维样膜形成的机理及引起继发性青光眼的原因已有详细的报道,但未提及由纤维样膜堵塞房角并可引起难以降低的高眼压。1993年以来我科在白内障囊外摘除和人工晶体植入术后的病例中,先后观察到13眼因房角膜性堵塞引起的高眼压,它们的临床表现不同于通常白内