The statistical study of 384 R.K. performed by the same surgeon shows that in 82% of R.K., preoperative myopia was between -1.5 to -6 diopters and in 77.5% of R.K., postoperative refraction was between -1 to +1. The 90% confidence interval was between -2 to +1 for all preoperative myopias and was the best when preoperative myopia was between -0.5 to -3 diopters (-1 to +1 D). The study of the stability and security shows that this surgical technique is stable and gives a good security.
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