Figure 1.

An overview of the manipulation of incident photonic energy, such as laser light as an adjunct to screening, diagnostic and therapeutic clinical activity. Key: LED—light emitting diode, UV—ultra-violet, NIR—near infra-red, with multi-wavelength representation as vertical incident arrows. OCT—optical coherence tomography, aPDT—antimicrobial photodynamic therapy. Re-emission, as direct beam or scattered irradiance is represented by complete and dotted arrows, either straight or non-linear.