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.

简介：<正>青光眼致盲危害极大,应引起人们的极度重视。随着我国医疗保健水平的提高,城市青光眼的致盲率已有所降低,但基层地区特别是卫生条件较差的边远地区,人们对青光眼的认识极少,因此青光眼在致盲眼病中仍占主要地位。正确诊治青光眼在基

简介：目的探讨心理护理在眼科护理中的应用.方法分别对3种眼病190位患者的心理变化进行总结和分析,并对患者实施了积极有效的心理护理及健康知识的教育.结果患者以一种良好的心态接受治疗和护理,并让患者对其所患疾病有了正确的认识,均情绪稳定.从而提高了治愈率,大大减少了并发症发生,患者对我们的服务质量较满意.结论对患者进行有效的心理护理可以建立良好的护患关系,让患者积极主动配合医护人员治疗,早日康复.