ANALYSIS OF PREOPERATIVE FACTORS PREDICTIVE OF VISUAL-ACUITY IN AXIALMYOPIA

Purpose: To identify the factors predicting visual acuity after catara ct surgery in patients with high myopia. Setting: Departments of Ophth almology, Showa University School of Medicine and Showa University Fuj igaoka Hospital, Kanagawa, Japan. Methods: Stepwise regression analysi s was used to identify the factors determining the visual acuity in 94 0 eyes with an axial length of 27.0 mm or longer having cataract surge ry. Using a formula derived from the stepwise regression analysis, the predicted postoperative visual acuity was compared with the actual va lue measured in another group of 104 eyes. Results: Five factors were identified to significantly determine postoperative visual acuity: axi al length, age, corneal opacity, refractive power of the cornea, and h istory of retinal detachment surgery. There was a significant relation ship between predicted and actual postoperative visual acuities (r = . 51, P < .001). Postoperative visual acuity was similar in 63% of cases . Conclusion: The results showed that at least five factors determine visual acuity after cataract surgery in patients with high myopia.