摘要

Objectives: The Q switched lasers have become one of the most versatile devices in laser practice in the recent past. The objective of this presentation would be to bring forth the latest techniques employed in the use of the Q switched Nd:YAG lasers and to demonstrate the versatility of these newer systems. Introduction: The Q switched lasers have become one of the most versatile devices in laser practice in the recent past. The objective of this presentation would be to bring forth the latest techniques employed in the use of the Q switched Nd:YAG lasers and to demonstrate the versatility of these newer systems. Materials / method: We have been using the modern Q switched Nd:YAG laser system with the latest technological advancements and attachments in our patients The 532nm wavelength has always been a difficult wavelength to use in darker skin considering its absorption into both the melanin and the oxyhemoglobin. The availability of the dye kit hand pieces in the newer QSLs has made it possible to produproduce 660 nm wavelength which is safer than the 532nm due to its specificity of absorption into the melanin sparing the hemoglobin The epidermal lesions treated easily in the dark skins with 660nm without any risks Results: We have been using the 660 nm wavelength to treat the epidermal pigmented lesions like freckles and lentigines in our patients with dark skin and have found that it is equally efficacious as the 532 nm wavelength and at the same time is associated with lesser post laser complications Conclusion: To conclude the newer additions to the QSLs has made these machines extremely versatile and useful in the present day derma laser practice. The availability of the 660 nm wavelength has reduced the possibility of serious post laser complications in skins of colour while maintaining the efficacy of treatment