Results of the Prospective Evaluation of Radial Keratotomy (PERK) Study Five Years after Surgery
| Autor: | George O. Waring, Michael J. Lynn, Azhar Nizam, Michael H. Kutner, John W. Cowden, William Culbertson, Peter R. Laibson, Marguerite B. McDonald, J. Daniel Nelson, Stephen A. Obstbaum, J. James Rowsey, James J. Salz, Linda B. Bourque |
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| Rok vydání: | 1991 |
| Předmět: |
Refractive error
medicine.medical_specialty genetic structures business.industry Eye disease medicine.medical_treatment Uncorrected visual acuity medicine.disease eye diseases Prospective evaluation Surgery Vision disorder Ophthalmology Radial keratotomy Clear zone medicine sense organs medicine.symptom business Dioptre |
| Zdroj: | Ophthalmology. 98:1164-1176 |
| ISSN: | 0161-6420 |
| DOI: | 10.1016/s0161-6420(91)32156-0 |
| Popis: | In the Prospective Evaluation of Radial Keratotomy (PERK) Study, 793 eyes of 435 patients with 2 to 8 diopters (D) of myopia received a standardized surgery consisting of 8 incisions with a diamond-bladed knife set at 100% of the thinnest paracentral ultrasonic corneal thickness measurement and a diameter of the clear zone of 3.0 to 4.5 mm; 97 eyes (12%) received an additional 8 incisions. There were 757 eyes (95%) followed for 3 to 6.3 years. After surgery, uncorrected visual acuity was 20/40 or better in 88% of eyes |
| Databáze: | OpenAIRE |
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