THE EFFICACY OF FRACTIONAL PICOSECOND 1064NM ND-YAG LASER IN THE TREATMENT OF ATROPHIC ACNE SCARS

Objectives: To evaluate the efficacy of fractional picosecond 1064nm Nd-YAG laser in the treatment of acne scar. Methods: This is a uncontrolled prospective study. 32 patients with atrophic acne scars were enrolled into study to receive 3 sessions of fractional picosecond 1064nm Nd-YAG laser treatment at 4-week intervals. The laser settings were 0.8J/cm2 in fluence, 8-mm spot size, 5% coverage and 5Hz in repetition rate. The primary outcome was the change in Goodman and Baron’s quantitative and qualitative grading scale between baseline and 3 months after the last treatment. Results: Goodman and Baron scale significantly decreased after the treatments with 12,1 (± 5.51) points in mean reduction (p < 0.001). There was a significant improvement in scar color, in which the red scar color reduced from 24.5% to 3.8% (p < 0.001). There were 73.1% of patients improved a scar degree. The number of scars (including icepick, rolling, and boxcar scars) also significantly decreased from after treatment (p < 0.001). No patient developed postinflamatory hyperpigmentation. Conclusion: Fractional picosecond 1064nm Nd-YAG laser is an effective option for treatmenting atrophic acne scars.