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: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.