title: Prognosis of refractive corrections.
abstract: The validity and efficacy of the prognosis equation published by Saunders (1984b) is tested against previously reported longitudinal data. In a fair and random sample and over a short interval, nearly 60% of the sample was found to have a prediction error of less than 0.25 DS and, in 92%, the error involved was less than 0.5 DS. Long-term prediction was found to have a less favourable outcome but 50% were correct within an error of 0.5 DS and 90% were found to have a prediction error of less than 1 DS. The largest prediction errors occur in the medium to high myopes whose myopia progresses rapidly.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D006801:Humans; D008875:Middle Aged; D009216:Myopia / Q000503:physiopathology; D011379:Prognosis; D012029:Refraction, Ocular; D012030:Refractive Errors / Q000628:therapy*