Abstract
Acute glaucoma is a severe threat to vision and personal living conditions in each patient, with fateful consequences. The aim of this prospective study is to predict the efficiency of therapy in these eyes. In 50 eyes with clinical acute glaucoma and high ocular pressure the evaluation of the chamber angle was done by ultrasound biomicroscopy (50 MHz) before and after Yag-laser treatment by laser iridotomy. Results were statistically evaluated. Chamber angle was preoperative in arithmetic average 0,98°, standard deviation s = 1,41°, median 0°, minimum 0°, maximum 5°. Post YAG-laser iridotomy, chamber angle was 7,92° (arithmetic average), standard deviation 4,86°, median 5°, minimum 0°, maximum 20°. YAG-iridotomy induced an average widening of chamber angle of 7,02° (median 5°, standard deviation 4,6°, minimum0°, maximum 18°). There was no gauss distribution (Chi2 and Kolmogoroff-Smirnoff test). The change of chamber angle was highly significant in Wilcoxon matched pairs test (p = 0,000000). Regression of postoperative against preoperative data was quadratic with the maximum between 2° and 3°. Ultrasound biomicroscopy shows the changes in chamber angle before and after YAG-iridotomy and the statistically significant effect of laser therapy.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call