Excimer laser keratectomy for correction of astigmatism.
We treated 13 eyes (12 patients) with excimer laser surgery for correction of astigmatism using linear corneal T-excisions. All eyes were followed up for a minimum of three months. We used a newly developed delivery system and special contact masks to deliver the 193-nm excimer light. Astigmatic corrections of up to 4.16 diopters were obtained. The actual corrections corresponded well with the intended values as predicted by a biomechanical theory. The refractive change over time was different than that observed after knife incisions, suggesting different repair mechanisms. An epithelial plug filling the whole T-excision persisted for over one year in all eyes.
Seiler
T
T
Universitätsaugenklinik im Klinikum, Charlottenburg, Berlin, West Germany.
Bende
T
T
Wollensak
J
J
Trokel
S
S
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001251:Astigmatism / Q000601:surgery*; D001696:Biomechanical Phenomena; D003315:Cornea / Q000601:surgery*; D005500:Follow-Up Studies; D006801:Humans; D053685:Laser Therapy / Q000295:instrumentation / Q000379:methods; D008875:Middle Aged