The difference between LED therapy and Laser therapy

The difference between LED therapy and Laser therapy

Light emitting diodes (LED) are just tiny light bulbs that fit easily into an electrical circuit. But unlike ordinary incandescent bulbs, they do not have a filament that will burn out. They are illuminated solely by the movement of electrons in a semiconductor material. LED’s produce incoherent light just like an ordinary light bulb does. Light from LED’s have very little tissue penetration compared to laser light.

By applying the first law of photochemistry (Grotthus-Draper Law), which states that light must be absorbed by a molecule before photochemistry can occur, one can immediately conclude that light from LED’s would work only on skin level conditions, if at all. For conditions deeper than skin layers one must choose light from a laser source.