简介：AIMTo把视觉功能的结果与提供和回顾的比较学习包括了的multifocalintraocular透镜(IOL).METHODSOur作比较51个病人(60只眼睛)收到了提供的IOL的培植(Tetraflex；16个病人，20只眼睛)，折射multifocalIOL(重新激增；18个病人，20只眼睛)，或绕射的multifocalIOL(ZMA00；17个病人，20只眼睛)。在在三的球形的等价物组织的surgery.RESULTSThe是-0.38???????迱需?韘?韘以后，主观折射，视觉尖酸，对比敏感(CS)，intraocular错误，和主观光斩的现象在3mo被检测吗？？

简介：·AIM:Toestablishanewmethodtorecordvisualevokedpotentialofratsandthismethodwasappliedtoretinalconedegeneration(RCD)andcongenitalstationarynightblindness(CSNB)ratstoseewhetheritisfeasible.·METHODS:Afteranesthesia,theratsscalpsurfacewasexposedandtwostainlessscrewswereimplantedat4mminfrontofand8mmbehindBregma.Thefrontonewasreferenceelectrodeandthelatteronewasrecordingelectrode.Thegroundelectrodewasjoinedtothetail.AndwerecordedVEPofscotopicadaptationandphotopicadaptation(Thestimulusintensityoflight:0.011,0.035,0.11,0.35,1.1and3.5cd·s/m2.Theywerealloverlappedfor100times.Therewere2-5minutesintervalsbetweendifferentintensities.Thefrequencyofstimulationwas1Hzandtimecoursewas300milliseconds).Aweeklater,werecordedtheVEPagaininthesameconditions.·RESULTS:Theratswhowereimplantedwithelectrodescouldlivelonger.Whentheywererecorded,therewasnodisturbanceandthewaveformswereveryclearandsteady.Therewasnodifferencebetweenthewaveformsrecordedbyconventionalmethodandthosebyimplantedelectrodeswhiletheamplitudeofnewmethodwaslargerthanconventional.WecouldgetthesameconclusioninRCDandCSNBrats.·CONCLUSION:Sincetheelectrodescanbekeptonthescalpforalongertime,wecannotonlyobservedynamicchangesofVEPbutalsoobservethelong-durationpatho-logicalchangesintherats.Becausethepositionsofrecordingandreferenceelectrodeswerefixed,thesystemerrorcanbereducedandtherepeatabilityofexperimentsincreased.·

简介：AIM:Topredictthevisualoutcomeinpatientsundergoingmacularholesurgerybytwonovelthree-dimensionalmorphologicalparametersonopticalcoherencetomography(OCT):arearatiofactor(ARF)andvolumeratiofactor(VRF).METHODS:Aclinicalcaseserieswasconducted,including54eyesof54patientswithanidiopathicmacularhole(IMH).EachpatienthadanOCTexaminationbeforeandaftersurgery.Morphologicalparametersofthemacularhole,suchasminimumdiameter,basediameter,andheightweremeasured.Then,themacularholeindex(MHI),tractionalholeindex(THI),andholeformfactor(HFF)werecalculated.Meanwhile,novelpostoperativemacularhole(MH)factors,ARFandVRFwerecalculatedbythree-dimensionalmorphology.Bivariatecorrelationswereperformedtoacquireasymptoticsignificancevaluesbetweenthesteadybestcorrectedvisualacuity(BCVA)aftersurgeryand2D/3DargumentsofMHbythePearsonmethodwithtwo-tailedtest.Allsignificantfactorswereanalyzedbythereceiveroperatingcharacteristic(ROC)curveanalysisofSPSSsoftwarewhichwereresponsibleforvisionrecovery.ROCcurvesanalyseswereperformedtofurtherdiscussthedifferentparametersonthepredictionofvisualoutcome.RESULTS:Themeanandstandarddeviationvaluesofpatients'age,symptomsduration,andfollow-uptimewere64.8±8.9y(range:28-81),18.6±11.5d(range:2-60),and11.4±0.4mo(range:6-24),respectively.Steady-postBCVAanalyzedwithbivariatecorrelationswasfoundtobesignificantlycorrelatedwithbasediameter(r=0.521,P<0.001),minimumdiameter(r=0.514,P<0.001),MHI(r=-0.531,P<0.001),THI(r=-0.386,P=0.004),HFF(r=-0.508,P<0.001),andARF(r=-0.532,P<0.001).Othercharacteristicparameterssuchasage,durationofsurgery,height,diameterholeindex,andVRFwerenotstatisticallysignificantwithsteady-post-BCVA.Accordingtoareaunderthecurve(AUC)values,valuesofARF,MHI,HFF,minimumdiameter,THI,andbasediameterare0.806,0.772,0.750,0.705,0.690,and0.686,respectively.However,Steady-post-BCVAanalysiswithbivar

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简介：AIM:Toevaluatetheindications,complications,andvisualandgraftsurvivaloutcomesineyesthathadundergonesimultaneouscataractextractionandpenetratingkeratoplasty(PKP).·METHODS:Wedescribedaretrospectivestudyof101patientswhohadundergonesimultaneouscataractextractionandPKPatKingKhaledEyeSpecialistHospitalbetweenJanuary1,2001,andDecember31,2002.Allpatientswerefolloweduppostoperativelywithmaximumfollow-up68months.·RESULTS:Themeanageofpatientswas61years.Themeanoverallfollow-upwas27months.Themostcommonindicationsforsurgerywerecornealscarring(45.5%),previousfailedgraft(15.8%),cornealulcer(12.9%),Fuchsendothelialdystrophy(8.9%),stromaldystrophy(2.9%),andotherconditions(14.5%).Overall,69grafts(68.3%)remainedclearatfinalfollow-up.Previousglaucomaorpostoperativeglaucomahadnostatisticallysignificanteffectsongraftoutcome(P>0.05).Thegraftrejectionrate(17.8%)wasasignificantriskfactorforfailure(P=0.00).Age,gender,indicationsforsurgery,cornealgraftdiameter,andintraoperativevitreouslosshadnostatisticallysignificanteffectsonthePKPoutcome(P>0.05).Postoperativevisualacuitywassignificantlyassociatedwithpreoperativevisualacuity(P<0.01).·CONCLUSION:Thepresentstudyprovidesevidencethatperformingacombinedprocedureresultsinmorerapidvisualrehabilitationandgoodgraftclarity.

简介：AIM:Toinvestigatetheassociationbetweensocioeconomicstatus(SES)andvisualdisability(VD)amongolderChineseadults.METHODS:WeobtaineddatafromtheSecondNationalSampleSurveyonDisability,conductedinChinain2006.Atotalnumberof192375olderadults(aged≥65y)werescreenedforsuspectedVDviainterviewswithtrainedexaminers.ThosewhoscreenedpositivelyforVDwerereferredtoophthalmologiststoobtainafinaldiagnosis.RESULTS:VDwasprevalentamong7.29%ofChineseadultsaged65andolder,andwashigherinruralareas(8.71%)thaninurbanareas(4.82%).AfteradjustingforSESindicatorsandcovariates,wefoundthatlesseducatedolderadultsweremorelikelytosufferfromVD,withanoddsratio(OR)of2.50(95%CI:2.26-2.82)forilliterates,comparedwiththosewhograduatedfromseniorhighschoolorabove.OlderadultswhowereinthelowestincomequintileweremoreatriskofVD,withanORof1.81(95%CI:1.68-2.95),comparedwithadultsinthehighestincomequintile.Inurbanareas,whencomparedwithadultswhograduatedfromseniorhighschoolorabove,thosewhodidnotcontinuetheireducationafterjuniorhighschool,primaryschool,orthosewhowereilliterate,weremorelikelytosufferfromVD,withanORof1.35(95%CI:1.51-1.59),1.84(95%CI:1.60-2.12),and2.63(95%CI:2.27-3.04),respectively.LowerlevelsofincomewerestatisticallysignificantwhenassociatedwithVD.Inruralareas,adultswhowereilliteratehadanORof2.21(95%CI:1.75-2.79)whencomparedtoadultswithseniorhighschooloraboveeducationlevel.Percapita,householdincomeremainedsignificantlyassociatedwithVD.Olderadultswhowere≥85,female,single,andresidinginruralareaswereassociatedwithhigherrisksofVD.CONCLUSION:Individual-levelSESamongtheelderly,intheformofeducationandincome,isassociatedwithVDamongelderlyChineseadultsinbothurbanandruralareas;however,theassociationisstrongerinruralareas.Furtherstudiesarestillrequiredtoex

简介：Empiricalmodedecomposition(EMD)isanewsignaldecompositionmethod,whichcoulddecomposethenon-stationarysignalintoseveralsingle-componentintrinsicmodefunctions(IMFs)andeachIMFhassomephysicalmeanings.ThispaperstudiesthesingletrialextractionofvisualevokedpotentialbycombiningEMDandwaveletthresholdfilter.ExperimentalresultsshowedthattheEMDbasedmethodcanseparatethenoiseoutoftheeventrelatedpotentials(ERPs)andeffectivelyextracttheweakERPsinstrongbackgroundnoise,whichmanifestedasthewaveformcharacteristicsandrootmeansquareerror(RMSE).

简介：AIMTo在在为复杂网膜的detachment.METHODSWe经历retinectomy的病人的硅酮油(ROSO)的移动执行了为复杂网膜的分开在retinectomy以后经历了ROSO的病人的回顾的盒子笔记评论以后，评估功能的结果。有不到6mo的病人列在后面在上面并且周期性的网膜的分开追随者ROSO是excluded.RESULTSThirty--六个病人被包括。吝啬的最好改正的视觉尖酸(BCVA)pre-ROSO是1.13logMAR(SD0.5)。吝啬的BCVA3mo追随者ROSO是1.16logMAR(SD0.53)，6mo追随者ROSO1.13(SD0.63)，和跟随ROSO1.18(SD0.69)的12mo。在在ROSO以后的12mo，BCVA在38.9%病人改善了，在25%仍然保持未改变，并且尽管在在在3点的ROSO以后的BCVA没有统计重要差别，在36.1%败坏了，6并且12mo(P=0.93)。retinectomy的尺寸从15°；到270°；(SD53)并且没影响.CONCLUSIONThere是的视觉结果(P=0.11)在在pre-和柱子之间的BCVA的没有统计上重要的差别--为复杂网膜的分开的ROSO后面的retinectomy。在与retinectomy的尺寸有关的视觉结果没有统计差别。

简介：BACKGROUND:Pattern-visualevokedpotential(PVEP)canreflectthefunctionalstatusofretinalganglialcells(RGC)andvisualcortex,andisanobjectiveexaminationforvisualpathwayfunction.Itisauniquemethodforobjectivelyexaminingtheopticnervefunctionofopticganglioncells.OBJECTIVE:Toobservetheeffectsofnervegrowthfactor(NGF)onPVEFinthetreatmentofopticnervecontusion,evaluatetheclinicalefficacyofNGF,andmakeanefficacycomparisonwithvitaminB12.DESIGN:Arandomlygrouping,controlledobservation.SETTING:DepartmentofOphthalmology,TangshanGongrenHospitalAffiliatedtoHebeiMedicalUniversity.PARTICIPANTS:Fortypatientswithopticnervecontusioncausedbyeyetrauma,whoreceivedthetreatmentintheTangshanWorkerHospitalAffiliatedtoHebeiMedicalUniversitybetweenJanuary2006andJune2007,wererecruitedinthisstudy.Theinvolved40patients,including34malesand6females,wereaged14-59years.TheywereconfirmedtohaveopticnervecontusionbyophthalmologicconsultationcombinedwithhistoryofdiseaseandorbitalCTexamination.Informedconsentsoftreatmentsanddetecteditemswereobtainedfromallthepatients.Thepatientswererandomlydividedinto2groupswith20ineach:NGFgroupandvitaminB12group.METHODS:Conservativetreatmentwasusedinthetwogroups.Inaddition,patientsintheNGFgroupwereintramuscularlyinjectedwithNGFsolution18μg/time,onceaday.ThoseinthevitaminB12groupwereinjectedbythesamemethodwithcommonvitaminB12of500μgcombinedwithvitaminB1of100mg,onceaday.MAINOUTCOMEMEASURES:PVEPexaminationwasconductedinallthepatientsbefore,oneandtwoweeksaftertreatment,andlatencyandamplitudeatP100weredetected.RESULTS:Fortypatientswithopticnervecontusionparticipatedinthefinalanalysis.Beforetreatment,significantdifferencesinthelatencyandamplitudeatP100werenotfoundinpatientsbetweentwogroups(P>0.05).ForeachpatientintheNGF

简介：AIM:Tocomparethespeedofvisualrecoveryfollowingmyopicthin-flapLASIKwithfourfemtosecondlasers.METHODS:Eighty-eighteyesof46patientswhowereconsecutivelyscheduledforbilateralLASIKwiththeIntraLaseFS60(Group1),FemtoLDVCrystalLine(Group2),WavelightFS200(Group3)andVisuMax(Group4)femtosecondlaserswereenrolledin.Monocularuncorrecteddistancevisualacuity(UDVA),best-correcteddistantvisualacuity(CDVA),refraction,contrastsensitivityandhigher-orderaberrations(HOAs)wereevaluatedat1,3d,1wkand1mopostoperatively.RESULTS:Sixteeneyes(72.7%)achieved20/16and8eyes(36.4%)were20/12.5at1dinGroup2,whichwassignificantlymorethanother3groups.At1wk,20eyes(90.9%)achieved20/16inGroups2and4.At1mo,20eyes(90.9%)achieved20/16inGroup2andGroup4,whichweresignificantlymorethanothertwogroups.Whileby1mo,thedifferenceoftheresidualsphericalequivalent(SE)wasnotstatisticallysignificantamong4groups(P=0.121).Theinductionofsphericalaberration(SA)weresignificantlylessforGroups2,3,4thanforGroup1onedayaftersurgery(P=0.015).Thedifferencesamong4groupswerenotstatisticallysignificantbeforeandaftersurgeryoneverytimepoints(allP>0.05).CONCLUSION:Thethin-flapLASIKprocedureusingtheFemtoLDVCrystalLineandVisuMaxfemtosecondlasershowfastervisualperformancerecovery.

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简介：AIM:Todescribetheclinicalfeatures,systemicassociations,treatmentandvisualoutcomesinSaudipatientswithscleritis.·METHODS:AretrospectivechartreviewwasperformedforpatientswithscleritispresentingtotwotertiarycareeyehospitalsinRiyadh,SaudiArabia,from2001to2011.Datawerecollectedontheclinicalfeaturesofscleritis,subtypesofscleritis,associatedsystemicdisease,historyofpreviousocularsurgeryandmedicaltherapy,includingtheuseofimmunosuppressants.Treatmentoutcomeswereevaluatedbasedonbest-correctedvisualacuity(BCVA)andresponsetotreatment.·RESULTS:Ofthe52patientsincludedinthestudy,non-necrotizinganteriorscleritiswasthemostcommontypeofscleritisin22patients(42.3%),followedbyposteriorscleritisin14patients(26.9%).Themajorityofcases,31patients(59.6%),wereidiopathicinnature.Systemicassociationswerepresentin12patients(23.1%).Infectiousscleritiswasconfirmedin6patients(11.5%):3withbacterialscleritisafterpterygiumexcision,2patientswithscleritisrelatedtotuberculosisand1patientwithscleritisresultingfromherpessimplexinfection.Forthevarioussubtypesofscleritis,BCVAvaluesaftertreatmentandtimetoremissionsignificantlydiffered(P<0.05,allcases).Systemicimmunosuppressivetherapiesinadditiontosteroidswereadministeredto46.2%ofallpatients.TheT-signwaspresentonB-scanultrasonographyin9(64.3%)ofthe14posteriorscleritispatients.·CONCLUSION:Non-necrotizinganteriorscleritiswasthemostcommonsubtypeofscleritis.Finalvisualoutcomeandtimetoremissiondifferedamongthevariousscleritissubtypes.

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简介：目前，在非计算机专业的VisualFoxpro数据库（以下简称VFP）课程教学中，教师一般采用的教学方法是，先在课堂上给学生介绍VFP命令和函数的使用规则，再引用例题加以论证，然后由学生通过做作业和实验加深对命令和函数的理解。在教学过程中，往往会出现下在几个问题：①教学中，多数教师着重于传授命令的使用方法和技巧，不能使学生真实地感受到VFP的可实现性，无法判断其命令或理论的正确性。②VFP课程中是以讲授VFP程序设计为主，教师每堂课都要在黑板上画出大量的基本流程图，理论分析通常都是一些繁琐的代码解析及一些孤立的计算数据，既增加了劳动强度，又影响了教学的进度和教学质量。③学生在听取理论课时，由于跟实际联系不上，对理论和代码难以理解，造成“难学、抽象”的思想障碍，久而久之容易失去学习兴趣。

简介：AIM:Toevaluatewhetherglaucomatousvisualfielddefectparticularlythepatternstandarddeviation(PSD)ofHumphreyvisualfieldcouldbeassociatedwithvisualevokedpotential(VEP)parametersofpatientshavingprimaryopenangleglaucoma(POAG).METHODS:VisualfieldbyHumphreyperimetryandsimultaneousrecordingsofpatternreversalvisualevokedpotential(PRVEP)wereassessedin100patientswithPOAG.ThestimulusconfigurationforVEPrecordingsconsistedofthetransientpatternreversalmethodinwhichablackandwhitecheckerboardpatternwasgenerated(fullfield)anddisplayedonVEPmonitor(colour14')byanelectronicpatternregeneratorinbuiltinanevokedpotentialrecorder(RMSEMGEPMARKII).RESULTS:Theresultsofourstudyindicatethatthereisahighlysignificant(P<0.001)negativecorrelationofP100amplitudeandastatisticallysignificant(P<0.05)positivecorrelationofN70latency,P100latencyandN155latencywiththePSDofHumphreyvisualfieldinthesubjectsofPOAGinvariousagegroupsasevaluatedbyStudent’st-test.CONCLUSION:ProlongationofVEPlatenciesweremirroredbyacorrespondingincreaseofPSDvalues.Conversely,asPSDincreasesthemagnitudeofVEPexcursionswerefoundtobediminished.

简介：BACKGROUND:Conventionalmethods(suchasocclusiontherapy,finemanipulation,complementary,andalternativemedicine)takeeffectsslowly,aretimeandlaborconsuming,andhaveuncertaincurativeeffectsinthetreatmentofamblyopia.Perceptuallearning,anewmethodfortreatingamblyopia,improvestheabilitytoprocesssignalsfromthecerebralopticnervesystembyspecificvisualstimulationandvisuallearning,aswellasactivationofthevisualsignalpathwayutilizingbrainnervoussystemplasticity.OBJECTIVE:Thisstudyinvestigatedandevaluatedthecurativeeffectsofperceptuallearning,whichcandirectionallyincreasebrainplasticity,onthetreatmentofamblyopiainchildren.Therelationshipbetweencurativeeffectandtimewasalsoanalyzed.DESIGN:Aself-controlexperiment.SETTING:VisualScienceandOptometryCenter,People'sHospitalofGuangxiZhuangAutonomousRegion.PARTICIPANTS:Atotalof125amblyopicchildren(250amblyopiceyes),73males,52females,averaging(6±2)yearsofage,receivedtreatmentattheVisualScienceandOptometryCenter,People'sHospitalofGuangxiZhuangAutonomousRegionbetweenSeptember2006andFebruary2007andwererecruitedforthisstudy.Allchildrenpresentedwithnostructuraldiseaseoftheeyeballs.Writteninformedconsentfortherapeuticregimentswasobtainedfromeachchild'sparent.TheprotocolreceivedapprovalfromtheHospital'sEthicsCommittee.METHODS:Visualfunctionwastestedwithaperceptuallearningsystem(ResearchCenterforHumanHealthandDevelopmentofSunYat-senUniversity,NationalEngineeringTechniqueResearchCenterforMedicalCareImplement)forvisualnoise,positionnoise,contourdiscrimination,contrastsensitivity,gratingstereogram,andrandom-dotfusion.Thesetestshelpedtoevaluatetheefficiencyofvisualinformationprocessingofthesechildren,andtodeterminethedegreeofdefectsoftheopticnervecellsandtheconnectionsofvisualcorticalneurons.Accordingtoresultsofvisualfunct

简介：AIM:TodeterminethevisualoutcomesinadultpatientswhosustainedopenglobeinjuriesandtodeterminewhetherthevisualprognosisfollowinganeyeinjuryinanAfricansettingdiffersfromthepredictedoutcomesaccordingtotheOcularTraumaScore(OTS)study.AsecondaryaimwastoestablishtheeviscerationratefortheseinjuriesandassesshowthisformofinterventionaffectedoutcomesincomparisontotheOTS.·METHODS:Aprospectivecaseseriesofallpatientsadmittedwithopenglobeinjuriesoveratwo-year(July2009toJune2011)period.InjurieswerescoredusingtheOTSandthesurgicalinterventionwasrecorded.Thebestcorrectedvisualacuityatthreemonthswasregardedasvisualoutcome.·RESULTS:Therewere249openglobeinjuries,ofwhich169patients(169eyes)completedthe3-monthfollow-up.Allpatientsunderwentprimarysurgery,175(70.3%)repairs,61(24.5%)eviscerationsand13(5.2%)otherprocedures.GlobeeviscerationsweremainlydoneonOTSCategory1cases,butoutcomesinthiscategorywerenotfoundtobedifferentfromOTSoutcomes.OutcomesweresignificantlyworseinCategory2,butwhentheentiredistributionwastested,thedifferenceswerenotstatisticallysignificant.TheoverallassociationbetweenOTSoutcomesandthefinalvisualoutcomesinthisstudywasfoundtobeastrong(P<0.005).·CONCLUSION:Reliableinformationregardingtheexpectedoutcomesofeyeinjurieswillinfluencemanagementdecisionsandpatientexpectations.TheOTSisavaluabletool,theuseofwhichhasbeenvalidatedinmanypartsoftheworld-itmayalsobeavalidpredictorinanAfricansetting.

简介：为neovascular在诊断和预后调查neutrophil-to-lymphocyte比率(NLR)和platelet-to-lymphocyte比率(PLR)的地方年龄相关的有斑点的退化(AMD).METHODSOne百个AMD病人和100健康控制在学习被包括。血样品从静脉的血被获得，它被用于平淡的分析，并且这些样品被使遭到完成血计数。NLR被定义为淋巴细胞的数字划分的嗜中性的计数，并且PLR被定义为lymphocytes.RESULTSNo的数字划分的血小板计数统计上重要的差别以人口统计的特征在考虑下面在二个组之间被观察(P>0.05)。在耐心的组的平均NLR被发现在健康控制组比那显著地高(P<0.05)。平均PLR作为与控制组相比在耐心的组是显著地更高的(P<0.05)。当最好改正的视觉尖酸(BCVA)增加了，NLR和PLR减少了(在49.8%和63.0%点的重要否定关联，分别地)而当中央有斑点的厚度(CMT)增加了，NLR和PLR增加了(在59.3%和70.0%点的重要积极关联，分别地).CONCLUSIONNLR和PLR层次作为与健康控制相比在neovascularAMD病人之中是更高的组。NLR和PLR层次被发现与BCVA并且直接相反地成正比与CMT成正比。

简介：AIMTo调查经历了intravitrealranibizumabmonotherapy对待neovascular的病人的长期的视觉、解剖的结果年龄相关的有斑点的退化(AMD)并且为经历了ranibizumabmonotherapy因为neovascularAMD在这回顾的study.RESULTSThe一般水准病人年龄被包括的74个病人的74只眼睛的至少2y.METHODSA总数跟随起来是72.1

简介：AbstractObjective:To compare and correlate the efficacy of the NOSE score & the VAS score in determining the symptomatic benefit in patients undergoing septoplasty.Materials and methods:Eighty patients with deviated nasal septum undergoing septoplasty were included in the study. NOSE score & VAS score (out of 100) was documented before and after surgery. Results were correlated and compared statistically.Results:In the NOSE score, the most bothersome symptom was trouble breathing through the nose (85.83); followed by Nasal obstruction or blockage (82.50). Wilcoxon test showed significant improvement with NOSE score and VAS score in all patients at 1 month and 3 months. Spearman’s coefficient showed a positive correlation between the two, though the score improvement and patient satisfaction rate was significantly high with NOSE score.Conclusions:NOSE score and the VAS score both provide effective framework for evaluating treatment responses after septoplasty. However, the NOSE score showed higher improvement and better patient satisfaction rate when used to measure of nasal obstruction as compared to the VAS score.