中華民國眼科學會學術討論會論文摘要

Academic and Annual Meeting of the Ophthalmological Society of Taiwan (R.O.C)

第五屆國際眼科專題演講會暨第四十二次學術演講會 ( 九十年十二月八日 ~ 九日 )

ABSTRACT FORM

Comparison of Measuring Methods of Corneal Thickness
with Orbscan System and Sonogage Pachymeter in Pre and Post LASIK Treatment

張朝凱、陳德照 *

台北博仁醫院、長虹診所、德照眼科診所 ＊

Purpose ： To evaluate corneal thickness with the Orbscan topography system and the Sonogage ultrasonic pachymeter in pre and post-LASIK eyes to determine the different effects of LASIK on these measurements

Method ： We measure central corneal thickness of right eyes in 30 patients before and after LASIK using both Orbscan and Ultrasonic pachymeter

Results ： The ultrasound instrument consistently measured a greater corneal thickness than Orbscan pachymeter .With the retrospectively review , the mean difference between ultrasound and Orbscan pachymeter was 15.6 ＋ / － 9.6 and 35.2 ＋ / － 18.5 in pre and postoperative eyes respectively ( p 0.092 ) .

Conclusion ： Ultrasound pachymeter consistently measures thicker than Orbscan pachymeter ; and there is particular interest as to the reliability of post-LASIK central pachymeter because of concern regarding corneal bed thickness for LASIK enhancements ; therefore , it is reassuring that postoperative Orbscan measurements are consistently lower and more conservative than ultrasound measurements.