We performed photorefractive keratectomy (PRK) and Laser In situ keratomileusis (LASIK) to compare the clinical results of PRK with that of LASIK in moderate myopes retrospectively. Of 40 eyes who were between -3.0 diopter and -6.5 diopter, there were 22 eyes of 18 patients treated by PRK and 18 eye...
We performed photorefractive keratectomy (PRK) and Laser In situ keratomileusis (LASIK) to compare the clinical results of PRK with that of LASIK in moderate myopes retrospectively. Of 40 eyes who were between -3.0 diopter and -6.5 diopter, there were 22 eyes of 18 patients treated by PRK and 18 eyes of 13 patients treated by LASIK. Follow-up evaluations were done at the interval of 2 weeks, 1, 2, 3 and 6 months. And we analized uncorrected visual acuity, best corrected visual acuity, spherical equivalent, corneal haze, complications at the each interval. The postoperative uncorrected visual acuity was 0.72, 0.86, 0.86, 0.91 and 0.85 in PRK, and 0.86, 0.86, 0.83, 0.85 and 0.82 in LASIK. The best corrected visual acuity was 0.94, 0.97, 0.97, 0.99 and 0.97 in PRK, and 0.96, 0.97, 0.97, 0.97 and 0.96 in LASIK respectively. The postoperative refractions within ±1 diopter of emmetropia were 32.5% in PRK and 76.7% in LASIK, and the difference between the two group was statistically significant at 2 weeks (P0.05) after 1 months. The average corneal haze decreased from Grade 1.66 to Grade 048 in PRK at 2weeks, and 3 months but in LASIK, the corneal haze was Grade 0.35 at 2weeks. The complications of PRK were irregular astigmatism in 1 eye and that of LASIK were interface particles in 2 eyes, irregular astigmatism in 2 eyes. The clinical results of PRK and LASIK were satisfactory and the two technical methods were effective for correction of moderate myopes
We performed photorefractive keratectomy (PRK) and Laser In situ keratomileusis (LASIK) to compare the clinical results of PRK with that of LASIK in moderate myopes retrospectively. Of 40 eyes who were between -3.0 diopter and -6.5 diopter, there were 22 eyes of 18 patients treated by PRK and 18 eyes of 13 patients treated by LASIK. Follow-up evaluations were done at the interval of 2 weeks, 1, 2, 3 and 6 months. And we analized uncorrected visual acuity, best corrected visual acuity, spherical equivalent, corneal haze, complications at the each interval. The postoperative uncorrected visual acuity was 0.72, 0.86, 0.86, 0.91 and 0.85 in PRK, and 0.86, 0.86, 0.83, 0.85 and 0.82 in LASIK. The best corrected visual acuity was 0.94, 0.97, 0.97, 0.99 and 0.97 in PRK, and 0.96, 0.97, 0.97, 0.97 and 0.96 in LASIK respectively. The postoperative refractions within ±1 diopter of emmetropia were 32.5% in PRK and 76.7% in LASIK, and the difference between the two group was statistically significant at 2 weeks (P0.05) after 1 months. The average corneal haze decreased from Grade 1.66 to Grade 048 in PRK at 2weeks, and 3 months but in LASIK, the corneal haze was Grade 0.35 at 2weeks. The complications of PRK were irregular astigmatism in 1 eye and that of LASIK were interface particles in 2 eyes, irregular astigmatism in 2 eyes. The clinical results of PRK and LASIK were satisfactory and the two technical methods were effective for correction of moderate myopes
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