I’ve had a few queries of late about red lights and eyes.

Is red light dangerous to the eyes?

No. There is increasing evidence that visible red wavelengths have a protective effect on the cells in the retina, the business end of the eyes.

Like many cells in our body, retinal cells start to deteriorate with age, and this is usually because the mitochondria haven't sufficient energy to fuel the cells properly. Miserable mitochondria make for morose, miserable cells. Red light stimulates mitochondria, literally giving them an energy boost. This enables the cell to function as it should - and this makes retinal cells work better and be more resistant to damage.

One of the big areas of red light research is in age-related macular degeneration. Dark red light, especially 670nm, is the one being used in treating macular degeneration. This work is being led by Prof Glen Jeffery at University College London.

The Well Red Coronet is not designed to go over the eyes - it is designed to shine light over the whole of the head - the part where there is (or once was…), hair.

For people with Parkinson’s disease, it is very useful to tip the Coronet back, so that there is more light over the low part of the back of the head. I’ve found that if people have dementia or depression, then more light over the forehead is helpful.

If some of the Coronet light shines on the eyes - this is not a problem. In fact, it is a benefit, If the pulsing visible red 670nm is annoying, just tip the Coronet back some more.

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