Authors (including presenting author) :
Shit KYF(1), Tong SY(1), Lam MY(1), Cheung KWA(1), Leung YY(1), Mak HN(1), Wong YK(1), Yu HY(1), Lee LN(1)
Affiliation :
(1) NTEC Wound Services Team / Department of Surgery, Prince of Wales Hospital
Introduction :
Photobiomodulation (PBM) is a non-thermal treatment that employs low-intensity light energy to enhance wound healing. Utilizing LED devices that emit blue light in the 410–430 nm wavelength range, with a power density of 120 mW/cm². The following case studies shows the effectiveness of blue light therapy in promoting tissue regeneration and incorporate 3D wound care imaging technology for objective data acquisition. By integrating these advanced imaging techniques, we aim to provide a comprehensive analysis of healing progress and demonstrate the potential of blue light therapy in clinical wound care.
Objectives :
1. To assess the effectiveness of blue light therapy on healing time and quality.
2. To identify possible side effects or complications, focusing on patient comfort and tolerability.
Methodology :
This study involved the recruitment of 7 cases, including various wound types: venous ulcers, surgical wounds, and post-radiation therapy ulcers. Each participant received blue light therapy with patients’ consent once a week for a total of 2 to 6 sessions, depending on the individual healing response. In addition to the treatment sessions, a one-month follow-up was conducted to evaluate the ongoing condition of the wounds. To ensure objective data collection, wounds were measured using a 3D wound imaging device at three key points: during the initial assessment, final therapy session and the 1 month follow up session. This imaging technology provided detailed measurements of wound size, depth, and percentage of granulation tissue.
Result & Outcome :
A total of 7 cases were analyzed, with three cases achieving complete wound healing, averaging 28 days for full recovery. Post-treatment evaluations indicated significant reductions in wound dimensions; on average, there was a 62% reduction in length, a 50% reduction in width, and a 55% reduction in depth following blue light therapy. During the one-month follow-up, further improvements were observed, with an additional 34% reduction in length, a 13% reduction in width, and a 24% reduction in depth. Notably, no recurrence was reported during the follow-up period, underscoring the potential effectiveness of blue light therapy in promoting sustained healing. Blue light therapy shows significant promise in enhancing wound healing and preventing recurrence in patients.
