[Photoablative, refractive keratectomy in treatment of myopia. A case study of 134 myopic eyes with 6-months follow-up].
A total of 106 myopic eyes and 134 eyes with sight were operated on with photorefractive keratectomy. To perform these operations the two surgeons used an excimer laser made by Aesculap-Meditec, emitting a wavelength of 193 nm. Patients were assigned to one of four groups according to refraction. The majority of patients had moderately high to high myopia, i.e., over 6 D. All patients could no longer wear spectacles or had developed contact lens intolerance. The follow-up period extended over 6 months. Depending upon the amount of correction desired in myopia, i.e., between -3D and -15 D, we ablated between 30 and 130 microns of the central corneal stroma after abrading the epithelium. The optical zone had a diameter of 5 mm. Three months after the operation a reduction of myopia by 10.6 D had been achieved in the group with moderately high myopia (10-20 D). In the group of high myopia (over 20 D), the mean correction was 13.4 D. In the group with refraction between 0 and 6 D, 88% of the eyes treated had attained a correction between -1 and +1 D 3 months postoperatively. The results in the group with myopia between 6 to 10 D were similar attaining a refraction of -1 and +1 D. Regression of 2 to 5 D occurred in all patients during the follow-up period of 6 months, depending on the degree of correction. We noted a slight subepithelial reticular haze in all eyes. In 98% of the cases the haze was clinically irrelevant.(ABSTRACT TRUNCATED AT 250 WORDS)
Dausch
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D
Klein
R
R
Schröder
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E
D000293:Adolescent; D000328:Adult; D000368:Aged; D003315:Cornea / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008028:Light Coagulation / Q000295:instrumentation*; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000601:surgery*; D011183:Postoperative Complications / Q000209:etiology; D012029:Refraction, Ocular; D014792:Visual Acuity
Photoablative, refraktive Keratektomie (PRK) zur Behandlung der Myopie. Eine Fallstudie an 134 myopen Augen mit 6monatiger Nachbeobachtungszeit.