AI Article Synopsis
- Researchers explored how nanosecond lasers might mimic the effects of picosecond lasers in skin treatments, focusing on laser-induced optical breakdown (LIOB).
- Through imaging and histological techniques, they found that a specific nanosecond laser could create similar skin changes, including vacuoles and cavities.
- The study concluded that nanosecond lasers can effectively stimulate skin repair and improve conditions like wrinkles and scars while keeping the skin's surface intact.
Article Abstract
Background And Objectives: Considering the pulse widths of picosecond and nanosecond lasers used in cutaneous laser surgery differ by approximately one order of magnitude, can nanosecond lasers produce the optical effect in human skin similar to laser-induced optical breakdown (LIOB) caused by picosecond lasers?
Methods: Cutaneous changes induced by a focused fractional nanosecond 1064-nm Nd:YAG laser were evaluated by VISIA-CR imaging, histological examination, and harmonic generation microscopy (HGM).
Results: A focused fractional nanosecond 1064-nm Nd:YAG laser can generate epidermal vacuoles or dermal cavities similar to the phenomenon of LIOB produced by picosecond lasers. The location and extent of photodisruption can be controlled by the laser fluence and focus depth. Moreover, laser-induced shock wave propagation and thermal degeneration of papillary collagen can be observed by HGM imaging.
Conclusion: Focused fractional nanosecond lasers can produce an optical effect on human skin similar to LIOB caused by picosecond lasers. With techniques of application, the treatment can induce epidermal and dermal repair mechanisms in a tunable fashion to improve skin texture, wrinkles, scars, and dyspigmentation, without disrupting the epidermal surface.
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| http://dx.doi.org/10.1002/lsm.23812 | DOI Listing |
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