目的　探讨准分子激光PTK治疗多种浅层角膜变性 (SCD)的效果。　方法　用MEL 60准分子激光机对 2 6只SCD眼行PTK治疗 ,随访 6～ 18个月。　结果　术后 4～ 15天角膜上皮完全愈合。 2 4眼 (92 % )的最佳矫正视力提高。其中 3眼 (12 % )提高 8行、6眼 (2 3 % )提高 5行、7眼 (2 7% )提高4行、6眼 (2 3 % )提高 3行、2眼 (8% )提高 2行、2眼无变化。2 0眼术后有远视改变。　结论　PTK治疗SCD安全有效 ,近期成功率高、并发症少 ,远期效果需进一步观察 Objective To investigate the effect of excimer laser PTK on a variety of superficial corneal degeneration (SCD). Methods Twenty-six SCD eyes underwent PTK treatment with a MEL 60 excimer laser. The patients were followed up for 6 to 18 months. Results 4 to 15 days after the corneal epithelium healed completely. The best corrected visual acuity was improved in 24 eyes (92%). There were 3 eyes (12%) increased by 8 lines, 6 eyes (23%) increased by 5 lines, 7 eyes (27%) increased by 4 lines, 6 eyes Increase 2 lines, 2 eyes no change. 20 patients with hyperopia changed after surgery. Conclusions PTK is safe and effective in the treatment of SCD. The recent success rate is high, and there are few complications. The long-term effect needs to be further observed