New evidence has just come to light that simple domestic LED lighting can cause retinal damage in mice, this is not surprising as I have already blogged about LED light damage in the past.
It’s not the frequency of the light but the intensity, I have on occasions been setting up an LED light for studio use and looked into the rows of lights for a millisecond and had an after image for at least 5 minutes which is not good.
Our business is awash with hi-brightness LED lighting which is far more damaging than the domestic LED lighting that affected mice.
Extract fron Life Science Journal
The present data clearly demonstrated irradiation of the white LED is above 400 nm and is not within the ultraviolet light region. However, the exposure of eye in LED illuminated environment was related to the development of photoreceptor loss. It must be noted that the light illuminations used in the present study as an experimental tool were not fully similar to normal condition that which would impinge upon the retina.
The evidence is now mounting but there are steps you can take to limit the damage.
1. You “MUST” at all times diffuse your LED lights unless you are bouncing the light and only if the light is out of direct line of sight i.e. a ceiling.
2. Cut down the brightness by using dimmable LED lights.
3. Do NOT point any video LED light at anyone at any time without a soft box or diffusion.
I love LED lights and use them all the time but as you can see by my example I always diffuse my LED lights especially the ones in front of the presenter (red line).
LED lights are a great asset to any video kit but the evidence is now growing that they are dangerous to the human eye if exposed over a period of time especially without diffusion.
All LED video light manufacturers should supply LED lights with diffusion built in, the only good thing is that LED lights are heat free so attaching a scrim, diffusion is easy and you can use simple plastic pegs or bull clips.