[Radial keratotomy. Optical and functional results after a 5-year postoperative period].
The authors report a retrospective study of R.K. surgery performed on 72 eyes for simple myopia by one surgeon, five years after surgery. Fifty-four cases were observed regularly at 1 year and 5 years post-operatively, which allowed an analysis of refractive and visual parameters, for myopias between-1.5 and 6 D before surgery. Five years after: 92.9% of eyes were within +/- 1 D of emmetropia; 5.7% of eyes were undercorrected by more than 1 D; 1.4% of eyes were overcorrected by more than 1 D and 88.7% of the cases had uncorrected visual acuity of 20/40 or more. In general, our refractive and keratometric results were stable between the first and fifth year post-operatively. We report only one case of real undercorrection, and one case of progressive hyperopia with loss of best spectacle corrected visual acuity. In this study, we observed a statistically significant decrease of 1/100 in the mean uncorrected visual acuity, which is explained by remyopisations. All but one of them were less than 1 D. The review of long term results of R.K. is difficult because of the many different methodologies and protocols. However all of them show a unpredictable continuous increase in the effect of surgery in the hyperopia direction. Prolonged wound healing seems to be the most probable reason for this progressive hyperopia.
Service Universitaire d'Ophtalmologie, C.H.U. Jean Minjoz, Besançon.
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S
Ernst
J M
JM
Bosc
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Piquot
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Montard
D000328:Adult; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007646:Keratotomy, Radial; D008297:Male; D009216:Myopia / Q000503:physiopathology / Q000601:surgery*; D012189:Retrospective Studies; D013997:Time Factors; D014785:Vision, Ocular / Q000502:physiology*
Kératotomie radiaire. Résultats optiques et fonctionnels à 5 ans postopératoires.