简介：目的：了解河北省磁县地区7～18岁青少年屈光状态的特征，为青少年近视防控工作提供科学依据。方法：对河北省磁县部分学区37700名学生进行视力、电脑验光、插片、眼前节及眼底检查。结果：河北省磁县地区7～18岁青少年各学龄段视力低常率有显著差异；屈光不正率有显著差异；远视、近视患病比例有显著差异。结论：随着年龄的增长，青少年的屈光状态在不断变化。青少年远视患者逐渐减少，近视患者逐渐增多。需追踪观察以保护视力及屈光状态的变化，做出正确处理。

简介：目的：观察翼状胬肉术后角膜屈光改变及屈光状态趋于稳定的时间。方法：随机选择翼状胬肉切除患者46例54眼，术前、术后3，7，14，30，90d行角膜地形图检查，并进行统计分析。结果：翼状胬肉术后散光度较术前显著下降，术后3d与术后其他观察阶段相比，最陡径上的K值（Ks值）、散光度差异有统计学意义（P〈O．05），术后7d及以后各观察阶段之间两两比较，Ks值、最平径上的K值（Kf值）、散光度差异无统计学意义（P〉O．05）。结论：翼状胬肉术后7d角膜屈光状态基本稳定。

简介：AIM:Toassessthequantitativeassociationbetweenanisometropiamagnitude(AM)andthelossesofresolutionandcontrastsensitivity;andtoexemplifyhowthefunctionoffusionandstereopsisvarywithAMinpreviouslyuntreatedanisometropicamblyopia.METHODS:Atotalof57patientswithpreviouslyuntreatedanisometropicamblyopiawithoutstrabismus(range:8-35years),weremeasuredrefractiveerror,bestcorrectedvisualacuity(BCVA),fusionandstereopsis,and48patientshavecompletedcontrastsensitivityfunctiontest.AMwasdeterminedbydioptricvectoradditionmodel,andtheamblyopiadepthwasdeterminedbythedifferenceofBCVAinlogMARunitsbetweentheamblyopicandfelloweyes.RESULTS:AMwassignificantlycorrelatedwithbothamblyopiadepth(PearsonR=0.728,P<0.001)andtheinter-oculardifferenceoftheareaunderthelogcontrastsensitivityfunction(AULCSF)(R=0.505,P<0.001).Depthofamblyopiaandtheinter-oculardifferenceofAULCSFwasalsosignificantlycorrelated(R=0.761,P<0.001).Themoreseverityofamblyopia,thepoorerlevelsofcontrastsensitivity.MostpureanisometropeswithAMwaslessthan3.0Dretainfusionandsomestereopsis,butwhenAMweremorethan3.0D,especiallyfortheanisometropeswhoseAMwasmorethan6.0D,fusionandstereopsisfunctionwereseriouslyimpaired.CONCLUSION:Inthepatientswithpreviouslyuntreatedanisometropicamblyopia,higherdegreeofanisometropiaissignificantlyassociatedwithdeeperamblyopia,worsecontrastsensitivity,fusionandstereopsisfunctions.

简介：AIM:Tocomparetheregularityandaccuracyoflaserinsitukeratomileusis(LASIK)flapscreatedbytheZiemerFEMTOLDV'Classic'(Ziemer'Classic')andZiemerFEMTOLDVCrystalLinefemtosecondlaser(ZiemerCrystalLine).METHODS:Fourier-domainopticalcoherencetomography(RTVueOCT)wasusedtomeasurethemorphologyof200LASIKflapsof100consecutivepatientscreatedwiththeZiemerClassic(100flaps)ortheZiemerCrystalLine(100flaps)atoneweekpostoperatively.Flapthicknesswasevaluatedat36specifiedmeasurementpointsoneachflap.Forallprocedureswithbothlasers,thenominalflapthicknesswas110μm.RESULTS:ThemeanflapthicknessoftheZiemerCrystalLinegroup(102.49±2.68μm)wasthinnerthanthatoftheZiemerClassicgroup(107.65±5.09μm)(P<0.01).Averagethicknessofallflapswasuniformwithin4μmatallmeasurementpoints.TheflapsintheZiemerCrystalLinegroupweremoreregularthanthoseintheZiemerClassicgroupwhenmeasuredfromthecentertotheperiphery.Themaximumdeviationfromthenominal110μmof36measurementswas8μmintheZiemerClassicgroup,whileintheZiemerCrystalLinegroupitwas9μm.Withinthe3600measurementsonthe100eyes,differencesgreaterthan20μmwereobserved0.14%intheZiemerClassicgroup,and0.04%intheZiemerCrystalLinegroup.CONCLUSION:TheflapscreatedwiththeZiemerFEMTOLDVCrystalLinefemtosecondlaseraremoreuniformandthinnerthanthosecreatedbytheZiemerFEMTOLDVClassicfemtosecondlaser.

简介：目的比较急性中心性浆液性脉络膜视网膜病变（CSC）的患侧与对侧眼视网膜频域相干光断层扫描（OCT）的图像特征。方法应用频域OCT对30例（60眼）单眼发病急性CSC患者患侧和对侧眼的黄斑部视网膜显微结构进行检测，比较患侧组与对侧组黄斑中心凹外核层厚度、光感受器层（IS／OS层）、视网膜色素上皮（RPE）形态差异。结果所有30例患者患侧眼均有不同程度黄斑部视网膜浆液性脱离，对侧眼中有4眼（13．3％）存在轻度视网膜浆液性脱离；患侧组黄斑中心凹外核层厚度均值为（95．32±24．87）μm，对侧组为（98．80±14．36）μm，两组差异无统计学意义（t=1．627，P=0．110）。患侧组中IS／OS层厚度均匀一致者12眼（40．0％），对侧组20眼（66．7％）；患侧组IS／OS层厚度均匀一致伴内外节缺损、不均、凸起增厚者共18眼（60．O％），对侧组共10眼（33．3％），差异有统计学意义（X2=4．28，P=0．038）。患侧组中出现RPE异常者有24眼（80．0％），对侧组中有8眼（26．7％），差异有统计学意义（x。=17．143，P=0．000）。结论频域OCT能清晰显示急性CSC患者的细微病理结构改变，单眼发病CSC患者中一部分对侧眼存在IS／OS层和RPE异常，但是其发生率较患侧眼低。（中国眼耳鼻喉科杂志，2013，13：165—167）