A preliminary clinical study on laser in-situ keratomileusis(LASIK) for correction of myopia.

To evaluate the efficacy laser in situ keratomileusis(LASIK) for the correction of low, moderate and high myopia.Methods LASIK was performed on 249 eyes of 127 patients, who had refraction from-1.25～-14.00 diopters and followed up for six months. Based on the refraction, the patients were divided into 2 groups: Group A, -1.25～-6.00 diopters. 137 eyes; Group B, -6.25～-14.00 diopters,112 eyes.Results At 6 months respectively 92.7% and 84.8% in the above groups were within ±1D; 83.2% and 72.3% were within ±0.5D; the uncorrected visual acuity was 0.5 or better in 97.8% and 92.0% of the two groups, 89.1% and 73.2% had the vision of 1.0 or better. There were no any serious complications during and after the operation of LASIK.Conclusions LASIK is effective for the correction of low, moderate and high myopia and it is a safe and predictive refraction operation which is more precise for correction of low and moderate myopia than for high myopia.