Distribution of Ocular Biometry in 7-and 14-Year-Old Chinese Children
Distribution of Ocular Biometry in 7-and 14-Year-Old Chinese Children
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DOI：
10.1097/opx.0000000000000570
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发表时间：
2015-05-01
影响因子：
1.4
通讯作者：
Wang, Ningli
中科院分区：
文献类型：
--
作者：
Li, Shi-Ming;Li, Si-Yuan;Wang, Ningli
目的。描述中国中部安阳城市地区 7 岁和 14 岁儿童的眼部生物特征分布及其与屈光的关系。方法。共有 2271 名年龄在 7.1 +/- 0.4 岁的一年级学生和 1786 名年龄在 13.7 +/- 0.5 岁的八年级学生进行了眼部生物测量和散瞳验光测量。对家长进行了家长近视问卷调查。结果。平均眼轴长度、前房深度、晶状体厚度、中央角膜厚度、角膜直径、角膜曲率半径、眼轴长度/角膜曲率半径比和球面等效屈光度分别为22.72+/-0.76mm、2.89+/-0.24mm、3.61+/-0.19mm、540.5+/-31μm、12.06+/-0.44 7 岁儿童的屈光度分别为 7.80 +/- 0.25 毫米、2.91 +/- 0.08 和 + 0.95 +/- 1.05 屈光度 (D)。它们是24.39+/-1.13mm、3.42+/-0.41mm、3.18+/-0.24mm、548.9+/-33μm、12.03+/-0.43mm、7.80+/-0.26mm、3.13+/-0.14和j2.06+/-2.20D，分别针对 14 岁儿童。与7岁儿童相比，年龄较大组的近视度数显着增加（-3.0 D），眼轴更长（1.7 μm），前房深度更深（0.3 mm），晶状体厚度更薄（-0.2 mm），中央角膜厚度更厚（10 μm），眼轴长度/角膜曲率半径比更大（0.22）（均p < 0.001），以及角膜直径更小（-0.03 mm， p = 0.02) 和类似的角膜曲率半径。两个年龄组的性别差异相似，男孩比女孩有更长的眼轴（0.5毫米）、更深的前房深度（0.1毫米）、更短的晶状体厚度（0.03毫米）、更大的中央角膜厚度（5μm）、更大的角膜直径（0.15毫米）和更大的角膜曲率半径（0.14毫米）（所有p = 0.01）。与球面等效屈光相关的最重要的变量是玻璃体长度、角膜曲率半径和晶状体厚度。结论。除了角膜曲率半径（不变）以及晶状体厚度和角膜直径（均较小）之外，14岁组的参数尺寸比7岁组大。除了镜片厚度（较小）之外，男孩的参数尺寸比女孩大。眼轴长度、角膜曲率半径和晶状体厚度是屈光最重要的决定因素。
Purpose. To describe distributions of ocular biometry and their associations with refraction in 7- and 14-year-old children in urban areas of Anyang, central China.Methods. A total of 2271 grade 1 students aged 7.1 +/- 0.4 years and 1786 grade 8 students aged 13.7 +/- 0.5 years were measured with ocular biometry and cycloplegic refraction. A parental myopia questionnaire was administered to parents.Results. Mean axial length, anterior chamber depth, lens thickness, central corneal thickness, corneal diameter, corneal radius of curvature, axial length/corneal radius of curvature ratio, and spherical equivalent refraction were 22.72 +/- 0.76 mm, 2.89 +/- 0.24 mm, 3.61 +/- 0.19 mm, 540.5 +/- 31 mu m, 12.06 +/- 0.44 mm, 7.80 +/- 0.25 mm, 2.91 +/- 0.08, and + 0.95 +/- 1.05 diopters (D), respectively, in 7-year-old children. They were 24.39 +/- 1.13 mm, 3.42 +/- 0.41 mm, 3.18 +/- 0.24 mm, 548.9 +/- 33 mu m, 12.03 +/- 0.43 mm, 7.80 +/- 0.26 mm, 3.13 +/- 0.14, and j2.06 +/- 2.20 D, respectively, in 14-year-old children. Compared with 7-year-old children, the older group had significantly more myopia (-3.0 D), longer axial length (1.7 mu m), deeper anterior chamber depth (0.3 mm), thinner lens thickness (-0.2 mm), thicker central corneal thickness (10 mu m), and greater axial length/corneal radius of curvature ratio (0.22) (all p < 0.001), as well as smaller corneal diameter (-0.03 mm, p = 0.02) and similar corneal radius of curvature. Sex differences were similar in both age groups, with boys having longer axial length (0.5 mm), deeper anterior chamber depth (0.1 mm), shorter lens thickness (0.03 mm), greater central corneal thickness (5 mu m), greater corneal diameter (0.15 mm), and greater corneal radius of curvature (0.14mm) than girls (all p = 0.01). The most important variables related to spherical equivalent refraction were vitreous length, corneal radius of curvature, and lens thickness.Conclusions. The 14-year-old group had larger parameter dimensions than the 7-year-old group except for corneal radius of curvature (unchanged) and lens thickness and corneal diameter (both smaller). Boys had large parameter dimensions than girls except for lens thickness (smaller). Axial length, corneal radius of curvature, and lens thickness were the most important determinants of refraction.