Corneal changes in schoolchildren

被引：36
作者：
Friedman, NE
Mutti, DO
Zadnik, K
机构：
[1] School of Optometiy, University of California at Berkeley, Berkeley, CA
[2] School of Optometry, University of California, Berkeley
来源：
OPTOMETRY AND VISION SCIENCE | 1996年 / 73卷 / 08期
关键词：
videokeratography; corneal toricity; astigmatism; corneal power; Fourier analysis; refractive error;
D O I：
10.1097/00006324-199608000-00006
中图分类号：
R77 [眼科学];
学科分类号：
100212 ;
摘要：
Videokeratography (TMS-1) data from the right eyes of 788 children between the ages of 6 and 14 years, examined in 1994 as part of the Orinda Longitudinal Study of Myopia, were analyzed using the Fast Fourier Transform (FFT) to quantify corneal power, toricity, and toricity axis. Cross-sectional analysis showed no statistically significant age trend for these parameters. Conversely, longitudinal analysis of data for 387 of these children, first measured in 1991, showed a statistically significant decrease in corneal power. Corneal toricity did not change significantly over this 3-year period, although there was a minute but statistically significant clockwise axis shift. From this we conclude that in the elementary and junior high school years-during which period axial length is known to increase-corneal flattening continues, but corneal toricity is stable.
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收藏
页码：552 / 557
页数：6
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