Conflicts of interest: None declared.
Low-irradiance red LED traffic lamps as light source in PDT for actinic keratoses
Article first published online: 6 NOV 2012
© 2012 John Wiley & Sons A/S
Photodermatology, Photoimmunology & Photomedicine
Volume 28, Issue 6, pages 332–334, December 2012
How to Cite
Enk, C. D. and Levi, A. (2012), Low-irradiance red LED traffic lamps as light source in PDT for actinic keratoses. Photodermatology, Photoimmunology & Photomedicine, 28: 332–334. doi: 10.1111/j.1600-0781.2012.00694.x
- Issue published online: 6 NOV 2012
- Article first published online: 6 NOV 2012
- Manuscript Accepted: 11 JUL 2012
- actinic keratosis;
- photodynamic therapy;
- red traffic lights
LED light sources for photodynamic therapy have become increasingly popular due to their narrow emission spectra that accurately match the absorption spectrum of porphyrins. Photodynamic therapy at low fluence rates has been shown to be as effective as high output irradiation for treatment of non-melanoma skin cancers. Fifteen patients with multiple non-hypertrophic actinic keratoses covering the scalp and the face were treated with aminolaevulinic acid photodynamic therapy using ordinary red LED traffic lamps as light source. All 15 patients improved clinically after one photodynamic therapy session. Only two patients required a second session to obtain satisfactory remission. Pain was minimal during these sessions. Red LED traffic lights constitute a simple alternative to far more complicated and expensive PDT light sources.