11 December 2012 Cutaneous pain effects induced by Nd:YAG and CO2 laser stimuli
Author Affiliations +
The near infrared laser technique can activate cutaneous nociceptors with high specificity and reproducibility and be used in anti-riot equipment. This study aimed to explore cutaneous pain effect and determine the threshold induced by Nd:YAG and CO2 laser stimuli. The corresponding wavelength was 1.32μm and 10.6μm. The pain effect was assessed in three healthy subjects (1 woman and 2 men) on the skin of dorsum of both hands. The energy of each pulse and whether the subjects felt a painful sensation after each stimulus were recorded. A simplified Bliss Method was used to calculate the pain threshold which were determined under three pulse durations for Nd:YAG laser and one pulse duration for CO2 laser. As a result the pain thresholds were determined to be 5.6J/cm2, 5.4J/cm2 and 5.0J/cm2 respectively when using Nd:YAG laser, 4.0mm beam diameter, 8ms, 0.1s and 1s pulse duration. The pain threshold was 1.0J/cm2 when using CO2 laser, 4.0mm beam diameter and 0.1s pulse duration. We concluded that the threshold of cutaneous pain elicited by 1.32μm laser was independent upon the pulse duration when the exposure time ranged from 8ms to 1s. Under the same exposure condition, the threshold of cutaneous pain elicited by 1.32μm laser was higher than that elicited by 10.6μm laser.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jia-Rui Wang, Jia-Rui Wang, Guang-Yuan Yu, Guang-Yuan Yu, Zai-Fu Yang, Zai-Fu Yang, Hong-Xia Chen, Hong-Xia Chen, Dong-Dong Hu, Dong-Dong Hu, Xian-Biao Zou, Xian-Biao Zou, "Cutaneous pain effects induced by Nd:YAG and CO2 laser stimuli", Proc. SPIE 8553, Optics in Health Care and Biomedical Optics V, 855327 (11 December 2012); doi: 10.1117/12.2000456; https://doi.org/10.1117/12.2000456


The role of epoxy resin in the mechanism of laser...
Proceedings of SPIE (July 31 2003)
Lasers in the skin cosmetic: problems and solutions
Proceedings of SPIE (September 10 2006)
Research on laser induced pain effect
Proceedings of SPIE (November 08 2010)

Back to Top