摘要
目的 探讨原发性屈光不正的性质 ,明确眼球各屈光成分 ,特别是玻璃体腔径对原发性屈光不正的作用。方法 检测 1336只眼的屈光状态、角膜屈光力 (cornealrefractivepower,CP)、眼前节长度 (anteriorocularsegmentlength ,ASL)、玻璃体腔径 (vitreouscavitylength ,VL)及视轴长度 (ocularaxiallength ,AL) ,其中远视 5 2 3只眼 ,正视 199只眼 ,近视 6 14只眼。分组研究CP的分布规律及各组间的差别、ASL和VL与屈光状态的关系、AL和VL同步变化的规律。结果 远视眼、正视眼和近视眼CP的分布规律经检验均呈正态分布 ;远视眼与正视眼、正视眼与近视眼比较 ,CP的均数差异均无显著性 (P >0 .0 5 ) ;ASL不随屈光度的变化表现规律性变化 ;VL随屈光度的改变进行性变化 ,各组间差异有显著性 (F =2 0 4 2 9,P <0 0 1) ;AL与VL同步变化 ,两者的变化量之间经比较差异无显著性(P >0 0 5 ) ;AL与VL显著相关 ,相关系数为 0 879。结论 眼球前节 (包括CP和ASL)结构对屈光状态无明显作用 ;VL决定AL ,从而决定屈光状态 ;VL是决定原发性屈光不正最主要的解剖因素。
Objective To study the nature of primary ametropia and disclose the actions of ocular refractive components, especially the length of vitreous cavity, on primary ametropia Methods The refractive state, corneal refractive power (CP), anterior ocular segment length (ASL), vitreous length (VL) and ocular axial length (AL) were measured for 1 336 eyes, including 523 hyperopic eyes, 199 emmetropic eyes and 614 myopic eyes The relationships of these elements were studied Results CP had no effect on the refractive state There was no significant difference between CP of these three refractive groups (hyperopia vs emmetropia and emmetropia vs myopia)( P >0 05) The test of normality showed that the distribution of CP was normal in each refractive state Case control study of paired sample revealed that ASL did not change regularly with the change of refraction, while VL changed progressively with the change of refraction and there was significant difference between each pair of groups( F =204 29, P <0 01) The study of the relationship with matching t test between AL and VL showed that the change amount of AL and VL was nearly the same, that was, the growth of AL was about the same as the growth of VL( P >0 05) Analysis of correlation and regression showed that these two elements were highly correlated, the coefficient of correlation being 0.879. Conclusion VL determines AL and finally determines refractive state VL is the most important element in determining primary ametropia while the anterior eye segment has no significant contribution
出处
《中华眼科杂志》
CAS
CSCD
北大核心
2000年第1期59-61,共3页
Chinese Journal of Ophthalmology
关键词
屈光不正
玻璃体
角膜屈光正
Refractive errors
Vitreous body
Corneal power
