Research Article

The Efficacy and Safety of a Low-Fluence 1064 nm Picosecond ND-YAG Laser Compared with Those of a Low-Fluence Photoacoustic Therapy Pulsed (PTP) Mode 1064 nm Q-Switched ND-YAG Laser for Treatment of Melasma: A Prospective Split-Face Study

Figure 3

Changes in the melanin index (MI). In both treatment groups, the significant reductions in MI at each visit compared to the baseline were confirmed by a paired t-test. The asterisks ( and ) imply a significant difference compared to the baseline (: ; : ).