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Treatment of pigmentary disorders using picosecond laser in Asian patients: A meta‐analysis and systematic review
Author(s) -
Dong Wenxin,
Wang Na,
Yuan Xiaohai,
Zhang Wei
Publication year - 2021
Publication title -
dermatologic therapy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.595
H-Index - 68
eISSN - 1529-8019
pISSN - 1396-0296
DOI - 10.1111/dth.14709
Subject(s) - medicine , meta analysis , cochrane library , randomized controlled trial , laser treatment , laser , subgroup analysis , dermatology , optics , physics
There were many studies evaluating the effect of picosecond (PS) lasers, but no meta‐analysis examined the effects of PS laser in the treatment of pigmentary disorders in Asians. The aim of this article was to review the before‐after effect of PS laser in Asians for the treatment of pigmentary disorders. PubMed, Embase, and Cochrane library were searched for articles published up to May 2020. The evaluations were summarized into a 4‐point scale that ranged from <25% (poor), 25%‐50% (fair), 50%‐75% (good), and 75%‐100% (excellent). Effect sizes (ESs) were calculated according to laser wavelengths and lesion types. There were two randomized controlled trials, three single‐arm trials, and three case series, with 200 patients. At 3 months after treatment, of all included patients, 3% (95%CI: 1%‐6%) were evaluated as poor or worse, 9% (95%CI: 2%‐21%) as fair, 29% (95%CI: 12%‐50%) as good, and 56% (95%CI: 28%‐83%) as excellent. The 532 and 1064, and 755 nm PS lasers had similar ESs across all four response groups. This meta‐analysis suggested that 56% of Asian patients who underwent PS laser for the treatment of pigmentary disorders were evaluated as “excellent” about the pigment clearance by a dermatologist at least 3 months after treatment.