1. [Clinical analysis of measuring corneal thickness with non-contact method]
- Author
-
Jia-qi, Zhou, Ren-yuan, Chu, and Xing-tao, Zhou
- Subjects
Adult ,Cornea ,Male ,Imaging, Three-Dimensional ,Adolescent ,Anterior Chamber ,Myopia ,Humans ,Female ,Diagnostic Techniques, Ophthalmological ,Ultrasonography - Abstract
To compare accuracy of the Pentacam with A-ultrasonoscope in the measurement of central corneal thickness.According to the degree of myopia, 107 myopic patients (211 eyes) were divided into four groups. The central corneal thickness was measured with the Pentacam system and A-ultrasonoscope. The results were compared statistically and the differences between these two methods were analyzed.Mean values of central corneal thickness measured by the Pentacam system and A-ultrasonoscope was (535.58 +/- 36.34) microm and (536.73 +/- 37.18) microm, respectively. There was no difference in the results obtained by these two methods in each myopia group (P0.05). The 95% limits of agreement were (-1.88, -0.42).The data shows that the results obtained by Pentacam system do not have significant difference as compared with that from the A-ultrasonoscope. The Pentacam system can provide precise results and has the advantage of simplicity and non-contact. Therefore, it would be a promising instrument for the evaluation of central corneal thickness before the cornea refractive surgery.
- Published
- 2006