Earlier, and perhaps more basic, LED masks usually provide just one primary colour treatment mode, such as red or blue, ...

Your eyes see differences in the light that comes in. It’s a bit like the way we hear sounds as being low or high. ... Blue looks green, and yellow looks light gray or violet.

Inward-turned eyes, on the other hand, are usually treated with green and yellow colors. Syntonic Phototherapy Research There has been a lot of research conducted on the effects and benefits of ...