目的 评估大光斑低能量Q开关Nd:YAG激光治疗黄褐斑的疗效和安全性。方法 采用Q开关Nd∶YAG激光器以波长1064 nm,光斑6～7 mm,能量2.0～2.5 J/cm²,对黄褐斑患者进行治疗,以治疗处呈现微红为治疗终点,每月1次,治疗5次,共治疗黄褐斑36例。结果 36例患者中基本治愈8 例(22.23%),显效15例(41.67%),好转9例(25%),无效4例(11.11%),前两者之和为总有效率,达63.89%。患者耐受性好,无明显副作用。结论 大光斑低能量Q开关Nd:YAG激光为治疗黄褐斑提供了安全有效的方法。

Objective To evaluate the efficacy and security of Q-switched laser with Large Spot and Low Fluence for the treatment of melasma. Methods Thirty-six patients with melasma were enrolled in study. 1064 nm Q-switched Nd:YAG laser was used with light spot of 6-7 mm and 2.0-2.5 J/cm² in fluence.Treatments are ended when the melasma area turns slight red. Subjects were received a total of 5 treatments at one month intervals. Results Thirty-six patients completed the trial. 22.23% of patients achieved 90% to 100% clearance and 41.67% achieved 60% to 90% clearance. The total efficient rate reached 63.89% .Side effects was minimal and all the patients tolerated the treatment well. Conclusion Q-switched Nd:YAG laser with Large Spot and Low Fluence provides a safe and effective treatment method for melasma.