Evaluating the predictability of radial keratotomy.
The predictability of radial keratotomy surgery for both the steel and diamond knife cases is evaluated in a long-term prospective study. Over 500 cases are used to build predictability models for both types of knives at 1, 3, 6, and 12 months after surgery. A predictability model is also presented at 24 months after surgery for the steel knife. R2 values range from 54 to 80% for the various models. Over 75% of cases are predicted within 2 D of their obtained result for the steel knife at all time periods and over 78% for diamond knife cases. Each model is also evaluated for how well it predicts future cases.
D000367:Age Factors; D003315:Cornea / Q000601:surgery*; D005500:Follow-Up Studies; D006801:Humans; D007429:Intraocular Pressure; D009216:Myopia / Q000601:surgery*; D012029:Refraction, Ocular; D012044:Regression Analysis; D013525:Surgical Instruments