Abstract
Objective To compare the effect of Q-switch Nd∶YAG laser and intensive pulsed light on freckles. Methods 80 patients with freckles were divided into 2 groups randomly. One group of patients were treated with Q-switch Nd∶YAG 532 nm frequency-doubled laser, the interval was 8 weeks. The other group of patients were treated with 570 nm intensive pulsed light, the interval was 8 weeks. Results We used Mann-Whitney U test to compare the curative effect of the two groups (P <0.05), and the mean rank (34.00) of the Q-switch Nd∶YAG laser treatment group was greater than that (47.00) of the intense pulsed light treatment group. Conclusions The curative effect of Q-switch Nd∶YAG laser is better than that of intensive pulsed light on freckles. Key words: Laser; Intensive pulsed light; Freckle
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