Excimer Laser Photorefractive Keratectomy for High Myopia and Myopic Astigmatism
| Autor: | Corrado Balacco Gabrieli, Federico Regine, Roberto Mollo, Elena Pacella, Solmaz Abdolrahimzadeh |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Adult
Male medicine.medical_specialty Refractive error Visual acuity genetic structures medicine.medical_treatment Eye disease Visual Acuity Astigmatism Refraction Ocular Excimer Photorefractive Keratectomy extreme myopia Cornea Ophthalmology Myopia medicine Humans lasik Dioptre business.industry Corneal Topography Middle Aged in-situ keratomileusis medicine.disease Ablation eye diseases Photorefractive keratectomy Treatment Outcome sighted eyes Female Lasers Excimer diopters sense organs Safety medicine.symptom business Follow-Up Studies |
| Zdroj: | Scopus-Elsevier |
| ISSN: | 2325-8179 2325-8160 |
| DOI: | 10.3928/1542-8877-19990601-06 |
| Popis: | * BACKGROUND AND OBJECTIVE: To deter mine the efficacy, safety, and predictability of excimer laser photorefractive keratectomy of high myopia and myopic astigmatism. * PATIENTS AND METHODS: 76 eyes of 52 patients with myopia from -8.00 to -23.50 diopters (D) with or without astigmatism up to - 5.5OD were treated with the VISX 20/20 excimer laser (VISK, Santa Clara, CA) and a multi-zone ablation technique. Visual acuity, manifest refraction, corneal haze, and topography were evaluated at 1 week and 1, 3, 6, 12, and 1 8 months postoperatively. * RESULTS: Postoperative refractions were generally stable after 12 months. At the last follow-up all patients were within - 1.96 D of the intended correction. Eighteen months postoperatively, 68% of patients undergoing photorefractive keratectomy (PRK), and 65% of patients undergoing photo astigmatic refractive keratectomy (PARK), were within 1 D of planned refraction. Furthermore, 87% of patients after PRK and 80% of patients after PARK had a visual acuity of 20/40 or better. * CONCLUSIONS: High myopia with or without astigmatism was successfully treated in most of the patients using PRK. The stability of the postoperative refraction during the first 1 8 months seems to be good. The incidence of adverse effects was low but improvements in the future should further reduce complications, thus increasing the safety of refractive procedures. [Ophthalmic Surg Lasers 1999;30:442-448.] |
| Databáze: | OpenAIRE |
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