Objective Appraise the important effect of the corneal topographic analysis in the early keratoconus diagnosis.
目的评价角膜地形图分析在圆锥角膜早期诊断中的重要作用。
2
The topographic correction of the electric sounding data by the boundary element method for anomalous potential is discussed, and the significance effect is obtained.
求解异常电位的边界单元法对电测深资料进行地形改正，应用效果明显。
3
Topographic relief is treated approximately as a wave consisted of harmonic waves of different cycles in this paper, and the effect of topographic relief on velocity analysis is discussed.