Grosvenor T, Scott R
Optometry Department, University of Auckland, New Zealand.
Optom Vis Sci. 1991 Mar;68(3):204-9. doi: 10.1097/00006324-199103000-00008.
Refraction and its components were measured for 79 young adults, 29 of whom were youth-onset myopes, 26 were early adult-onset myopes, and 24 were emmetropes. By submitting the data to analysis of variance, it was found that: (1) corneal power was significantly greater for both groups of myopes than for the emmetropes; (2) lens power and thickness were not significantly different for the three groups of subjects; (3) anterior chamber depth was significantly greater for the youth-onset myopes than for the emmetropes; and (4) vitreous chamber depth and axial length were both significantly greater for youth-onset myopes than for early adult-onset myopes, and significantly greater for young adult-onset myopes than for emmetropes. When youth-onset myopes and early adult-onset myopes were matched on the basis of spherical equivalent refraction, no significant differences were found between the two groups for any of the components of refraction. It was concluded that the differences between youth-onset myopes and early adult-onset myopes found in the analysis of variance occurred only as a result of the fact that the youth-onset myopes had been myopic for longer periods of time and therefore were considerably more myopic.
对79名年轻成年人进行了屈光及其组成部分的测量，其中29人为青少年起病型近视，26人为早发性成年近视，24人为正视眼。通过对数据进行方差分析，发现：(1)两组近视患者的角膜屈光力均显著高于正视眼；(2)三组受试者的晶状体屈光力和厚度无显著差异；(3)青少年起病型近视患者的前房深度显著大于正视眼；(4)青少年起病型近视患者的玻璃体腔深度和眼轴长度均显著大于早发性成年近视患者，且早发性成年近视患者的玻璃体腔深度和眼轴长度均显著大于正视眼。当青少年起病型近视和早发性成年近视根据等效球镜度进行匹配时，两组在任何屈光成分上均未发现显著差异。研究得出结论，方差分析中发现的青少年起病型近视和早发性成年近视之间的差异仅由于青少年起病型近视的近视时间更长，因此近视程度更深。
