Red Light Panel Eye Safety: Glasses, Near-Infrared and What to Avoid
The LEDs of a red light panel are bright at close range, and the near-infrared ones are hard to see. For both reasons the rule for MARS 400 is simple: wear the protective glasses from the box during every session, and do not look straight into the LEDs.
Why eyes need protection
Any bright LED at close range is something to keep out of your eyes, and a panel is made to be used close. Red light is easy to notice. Near-infrared light is different: at 850 nm the eye responds so weakly that a panel in near-infrared mode can look almost switched off. Not being able to see light does not tell you whether it is comfortable to look at, so the glasses are not only for the red mode.
Use the glasses from the box
Check that the supplied glasses are undamaged and fit securely. Put them on before starting the LEDs and keep them on until the light is off. If they are missing, cracked, scratched or no longer secure, postpone use and ask Resty for a compatible replacement.
Closed eyes or sunglasses are not enough
The model manual says closed eyes and ordinary sunglasses do not replace the specified protection. The terms of service also require the glasses for every session and no staring into the LEDs, including NIR mode.
Keep the LEDs out of your line of sight
When you use the panel on the body, aim it at the area and keep the LEDs out of your line of sight where you can. For the face, the glasses are the only sensible answer. Do not glance at the panel to check whether it is on: the timer display shows that a cycle is running.
People who should take extra care
Anyone who is pregnant, photosensitive, on medication that increases light sensitivity or living with a relevant medical condition should ask a qualified professional before using a panel at all. Children and pets should stay away from the panel while it is switched on.
If your eyes feel uncomfortable
End the session and switch the light off immediately. Seek medical advice if eye symptoms persist, and prompt care for vision changes or severe symptoms, as the manual instructs.
Quick answers
Do I need the glasses in near-infrared mode?
Yes. The light is hard to see, but it is still light, so the same rule applies in every mode.
Can I use sunglasses instead?
No. The MARS 400 manual explicitly says ordinary sunglasses are not a substitute for the specified eye protection. Use the supplied glasses or a compatible replacement confirmed by Resty.
Is it safe to look at the panel when it looks dim?
No. A dim look in near-infrared mode comes from how the eye responds to 850 nm light, not from there being less to look at.
More on the two wavelengths in our guide to 660 nm and 850 nm light, and on the whole routine in the session set-up guide. MARS 400 comes with the glasses.
