简介：目的：分析维吾尔族与汉族近视患者中央角膜厚度（centralcornealthickness，CCT）是否存在差异，了解维吾尔族近视患者中央角膜厚度与角膜曲率、眼压值及屈光度关系。方法：对屈光中心就诊近视患者汉族137例274眼及维吾尔族患者115例230眼测量其角膜中央厚度、眼压、屈光度及角膜曲率，分析维吾尔族与汉族CCT差异性及维吾尔族CCT与角膜曲率、眼压值及屈光度关系。结果：维吾尔族CCT（514．94±31．94μm）与汉族CCT（514．86±29．50μm）无显著性差异（t=0．029，P=0．977）。维吾尔族近视患者CCT与眼压间差异有统计学意义（r=0．4944，P〈0．01）。维吾尔族近视患者CCT与角膜曲率及屈光度间差异无统计学意义（r=0．093，P〉0．05；r=0．120，P〉0．05）。结论：维吾尔族与汉族CCT无显著性差异，维吾尔族近视患者角膜厚度与眼压间存在相关性，而与角膜曲率及屈光度无相关性。

简介：目的骨髓移植术后处于慢性排异反应期患睑球粘连者少见,羊膜移植的感染风险大,患者的心理压力大,进行感染风险的评估和预防及心理疏导尤为重要。

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.