双眼散光轴向关系的定性和定量分析

【】　目的　探讨双眼散光轴向的关系。　方法　随机选取2010年1―12月预行准分子激光原位角膜磨镶术（laserinsitukeratomileusis，LASIK）手术患者200例400只眼（散光>-0.50D），收集全眼散光和角膜散光轴向，定性和定量分析双眼散光轴向的关系。　结果　①定性分析双眼全眼散光性质相同病例在电脑验光仪结果中占92.5%，在综合验光仪结果中占95.0%；双眼角膜散光性质相同病例在电脑验光仪结果中占95.5%，在角膜地形图结果中占97.5%。②定量分析双眼全眼散光在电脑验光仪结果中对称者为36.5%，近似对称为25.0%，非对称为38.5%；在综合验光仪结果中对称者为50.5%，近似对称为19.5%，非对称为30.0%。双眼角膜散光在电脑验光仪结果中对称者为37.0%，近似对称为31.5%，非对称为31.5%；在角膜地形图结果中对称者为43.0%，近似对称为32.0%，非对称为25.0%。双眼散光轴向对称性指数的中位数在4种检查结果中分别为8、6、8、6。　结论　双眼的全眼和角膜散光在轴向方面都具有同质性，并且具有对称或近似对称趋势。【Abstract】　Objective　Toanalyzetherelationshipbetweenbinocularastigmatismaxes.　Methods　Thisstudyincluded400eyesof200patientstreatedbylaserinsitukeratomileusis(LASIK)betweenJanuaryandDecember2010,whoseastigmaticdegreesweregreaterthan-0.5D.Wecollectedastigmaticaxlescomingfromeitherwholeeyeorcornea.Therelationshipbetweenbinocularastigmatismaxeswasanalyzedqualitativelyandquantitatively.　Results　①Qualitativeanalysiscasesoftotalastigmatismaxiswithsimilarqualityinautorefractiontookup92.5%,and95%insubjectiverefraction.Casesofcorneaastigmatismaxiswithsimilarqualityinautorefractiontookup95.5%,and97.5%incorneatopography.②Quantitativeanalysisinautorefraction,casesoftotalastigmatismaxesweresymmetricalin36.5%,approximatelysymmetricalin25%,anddissymmetricalin35%ofthesubjects.Insubjectiverefraction,50.5%showedsymmetry,19.5%approximatesymmetry,and30%dissymmetry.Inautorefraction,casesofcorneaastigmatismaxisweresymmetricalinabout37%,approximatelysymmetricalin31.5%,anddissymmetricalin31.5%ofthepatients.Incorneatopography,43%ofthecasesweresymmetrical,about32%wereapproximatelysymmetrical,and25%weredissymmetrical.Themiddlenumbersofthesymmetricalindexforthefourkindsofexaminationswererespectively8,6,8,and6.　Conclusion　Thetotalastigmatismaxisandthebinocularastigmatismaxisofcorneahavethecharacteristicofhomogeneity,alsothetrendofsymmetry.