Reply To: Does RLT have side effects? Home › Forums › Red Light Therapy › Does RLT have side effects? › Reply To: Does RLT have side effects? October 6, 2020 at 7:43 pm #894 DefianceLuluParticipant @HilaryFairy I guess it actually depends with how sensitive your eyes is with the lights. But if you want to be careful and do not want to risk some things, yeah I guess it is best to wear protective glasses or goggles.