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Abstract #6234 Published in IGR 2-2
Fourier analysis of corneal astigmatism after trabeculectomy
Maeno A; Hayashi K; Oshika T; Hayashi H; Hayashi FJapanese Journal of Clinical Ophthalmology 2000; 54: 587-590
PURPOSE: To quantitate and analyze the irregular corneal astigmatism after trabeculectomy. CASES AND METHOD: A total of 40 eyes of 40 patients underwent primary trabeculectomy by a single surgeon. The series comprised primary open-angle glaucoma (20 eyes), capsular glaucoma (17 eyes), and primary closed-angle glaucoma (three eyes). There were 18 phakic eyes, 19 pseudophakic eyes and three aphakic eyes. The topography within 3 mm of central cornea was evaluated up to one year after surgery using TMS-1. The corneal refraction was decomposed into spheric and astigmatic components by Fourier analysis. FINDINGS: The mean spherical equivalent and regular astigmatic component remained stationary throughout the observation period. The decentration component increased significantly after surgery and returned to the preoperative value by 12 months. The higher-order irregularity component showed a transient postoperative increase. CONCLUSIONS: Irregular astigmatism, particularly decentration component, increased significantly after trabeculectomy and returned to the preoperative value by 12 months after surgery. LA: Japanese
Dr. A. Maeno, Hayashi Eye Hospital, 4-7-13 Hakata-ekima Hakata-ku, Fukuoka-shi 810-0012, Japan
Classification:
12.8.1 Without tube implant (Part of: 12 Surgical treatment > 12.8 Filtering surgery)
