DocumentCode
3525890
Title
Investigation and improvement of corneal topographical analysis
Author
Wang, Jianyi ; Rice, David A. ; Klyce, Stephen D.
Author_Institution
Dept. of Biomed. Eng., Tulane Univ., New Orleans, LA, USA
fYear
1988
fDate
4-7 Nov. 1988
Abstract
Accurate methods for the analysis of corneal topography are essential for the evaluation and management of corneal refractive errors. Photokeratoscopy is the most common clinical qualitative method to estimate corneal shape. The two-dimensional information on the keratoscope image is insufficient for reconstructing a three-dimensional corneal surface uniquely. The assumptions necessary for calculation lead to errors. The algorithm used in current practice was investigated for these errors. An improved one is proposed that avoids some invalid assumptions. Tested on nonspherical models of known shape, the new algorithm shows four times better accuracy.<>
Keywords
eye; surface topography measurement; algorithm; clinical method; corneal refractive errors; corneal topographical analysis; errors; nonspherical models; photokeratoscopy;
fLanguage
English
Publisher
ieee
Conference_Titel
Engineering in Medicine and Biology Society, 1988. Proceedings of the Annual International Conference of the IEEE
Conference_Location
New Orleans, LA, USA
Print_ISBN
0-7803-0785-2
Type
conf
DOI
10.1109/IEMBS.1988.95335
Filename
95335
Link To Document