I got this from RubyLux’s website. If you are using their item please read :
The first reason you need eye protection is because the light is so bright it is going to be very uncomfortable on your eyes. Depending on the bulb or device you’re using, it might even be bright enough to harm your eyes.
Just closing your eyes may not be good enough to protect them. Have you ever still been able to “see” light even with your eyes closed? That happens because the light is still making contact with your eye’s retina. The brightness of a red light therapy bulb could certainly cause that to happen.
Another reason is that some people, especially those with certain medical conditions, are more likely to react to light. Bright or flashing lights can trigger migraine headaches or seizures in susceptible people, for example.
So what can you use for eye protection during red light therapy? Fortunately, if your therapy is ONLY red light (no other colors and no infrared light, which is different from red light) you have a lot of options. You basically just need to block enough light to make your eyes comfortable. Extremely dark tinted glasses or goggles might work. And there are red light therapy eye goggles and glasses on the market that are specifically made for it. You could even opt to block all light from your eyes entirely.