Korean J Ophthalmol > Volume 6(2); 1992 > Article
Korean Journal of Ophthalmology 1992;6(2):83-90.
DOI: https://doi.org/10.3341/kjo.1992.6.2.83    Published online December 30, 1992.
Radial keratotomy for the purpose of reducing glasses power in high myopia.
Kyu Hong Pak, Jae Ho Kim
Department of Ophthalmology, Kangam St. Mary's Hospital, Catholic University Medical College, Seoul, Korea.
Abstract
Anterior radial keratotomy for high myopia (over-6.25 diopter) to reduce refractive error was not able to dispense with glasses or contact lenses due to the high myopia itself. However patients could see objects well and were free of dizziness while wearing glasses of relatively reduced power. We performed anterior radial keratotomies on 83 high myopic and/or astigmatic eyes of 47 patients at Kangnam St. Mary's Hospital between May 1990 and Mar. 1991. Eight radial incisions with a diamond blade were performed and the Ruiz technique was added for astigmatism of over 2.0 diopters. The depth of incision was 90 to 95% of corneal thickness and the optical zone was 3mm in diameter. Patients were followed up on postoperative 7 days. 1 month, 3 months, 6 months, 1 year and thereafter. Uncorrected visual acuity of 20/40 or better after radial keratotomy could be obtained in 19.6% of high myopic eyes. A mean reduction of the spherical equivalent cycloplegic refraction of 5.13 diopters and a keratometric reading of 3.89 diopters after radial keratotomy were observed. About 90% of patients were satisfied with their visual outcome with reduced refractive power glasses. We recommend radial keratotomy for high myopic patients to reduce the refractive power and to help them enjoy a more comfortable life.
Key Words: astigmatism;high myopia;radial keratotomy;spherical equivalent;uncorrected visual acuity
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