近视和远视儿童的角膜地形图研究。

The study of corneal topography in myopic and hyperopic children.

作者信息

Gao Lei, Zhuo Xuying, Ma Lusheng, Yu Ning, Wang Zhonghao, Jiang Pengfei

机构信息

Department of Ophthalmology, Yantai Yuhuangding Hospital Affiliated Hospital of Medical College, Qingdao University, Yantai 264000, Shadong Province, China.

出版信息

Yan Ke Xue Bao. 2005 Mar;21(1):15-9.

PMID:17162911

Abstract

PURPOSE

To compare the differences of corneal topographies in myopic and hyperopic children and study the effect of Atropin on their changes.

METHODS

The refractive components of 136 eyes with different refractive conditions were measured with A-Scan and their corneal topographies with and without cycloplegia were obtained respectively.

RESULTS

The mean corneal power of zones 3mm (MD3, P=0.031) and minor keratometer K2 (P=0.003) of myopia are greater than those of hyperopia without cycloplegia. MD3 (P=0.009) and Keratometer K1 (P = 0.025) increased in hyperopic eyes, while MD3 (P=0.033), K1 (P = 0.035) and K2 (P = 0.002) decreased in myopic eyes significantly after cycloplegia. Similarly, the mean corneal power of zones 5mm (MD5) and 7mm (MD7) in myopic eyes decreased dramatically (P < or = 0.001).

CONCLUSIONS

The corneal power was found to be greater in myopia than that in hyperopia. The effect of Atropin on corneal shape of myopia and hyperopia was in the opposite direction.

摘要

目的

比较近视和远视儿童角膜地形图的差异，并研究阿托品对其变化的影响。

方法

用A超测量136只不同屈光状态眼的屈光成分，并分别获取其散瞳前后的角膜地形图。

结果

未散瞳时，近视眼中3mm区域平均角膜屈光力（MD3，P = 0.031）和角膜曲率计最小读数K2（P = 0.003）大于远视眼。散瞳后，远视眼中MD3（P = 0.009）和角膜曲率计读数K1（P = 0.025）增加，而近视眼中MD3（P = 0.033）、K1（P = 0.035）和K2（P = 0.002）显著降低。同样，近视眼中5mm区域平均角膜屈光力（MD5）和7mm区域平均角膜屈光力（MD7）显著降低（P≤0.001）。