简介：目的探讨高分辨率颞骨CT密度在诊断耳硬化中的作用。方法分析手术确诊的耳硬化患者34例（34耳，病例组）和同期确诊的周围性面瘫患者33例（对侧正常耳33耳，对照组）的颞骨CT扫描和纯音听阈测试结果。在0．75mm层厚颞骨CT轴位层面的耳囊周围，手动设置7个兴趣区，测量平均cT值。根据CT表现将耳硬化病例分为2个亚组：A组，CT显示无病理变化；B组，耳蜗区骨密度降低。比较各兴趣区病例组与对照组平均CT值的差异，分析病例组CT表现与纯音测听结果的关系。结果卵圆窗后缘和卵圆窗前缘这两个兴趣区，病例组平均CT值明显低于对照组（卵圆窗后缘t=-2．030，P=0．046；卵圆窗前缘Z=-4．979，P〈0．01）。A组30例，包括传导性聋9例（30％），混合性聋21例（70％）；B组4例，包括传导性聋1例（25％），混合性聋3例（75％）。结论耳硬化患者卵圆窗周围骨质CT密度可能发生改变。

简介：目的探讨低功率半导体激光治疗羟基磷灰石义眼座暴露的疗效.方法采用JAM-II型多功能半导体激光治疗仪(激光物质为GaA1As,激光波长650nm)对22例不同程度的义眼座暴露患者进行激光照射治疗,并将结果与既往采用药物及手术治疗的20例义眼座暴露患者比较.结果激光组22例全部愈合(100%);药物及手术组中轻、中、重度的愈合率分别为83.3%,63.6%和0.经采用X2检验之四格表精确检验法处理,2组间轻度患者的愈合率在统计学上差异无显著性意义(P=0.545),而2组间中度和重度患者的愈合率在统计学上差异有显著性意义(P＜0.05).结论低功率半导体激光治疗羟基磷灰石义眼座暴露的疗效优于药物及手术方法.可用于预防及治疗羟基磷灰石义眼座暴露.

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.