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Histologic study showed how PIH was prevented

Randal Pham, MD et al. reported a laser technique used to avoid post-inflammatory hyperpigmentation around the eye in Asians after CO2 laser resurfacing (Mixto SX®, Lasering USA, San Ramon, CA) in the April issue of Modern Plastic Surgery. The authors studied 6 subjects undergoing fractionated CO2 laser resurfacing in the areas around the eyes. A seventh subject was enrolled for histologic study.

The lack of hyperpigmentation was attributed to a proprietary non-sequential Z-shape pattern of scanning developed by Lasering USA. The use of loupes to assess ablative depth also improved safety during laser ablation. The uniform depth of laser ablation of 0.05 mm of thermal injury within the resurfaced area showed that stacking of scanned pulses was accurate enough to provide consistent depth ablation and yet only minimal injury occurred when compared to the use of laser in continuous wave mode.

Posted May 15, 2015

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