RE:RE:RE:RE:RE:Nice ! donated two Theralase® TLC-2400There are actually several trials for Parkinson's and other neurodegenerative diseases using photobiomodulation. For Parkinson's:https://clinicaltrials.gov/search?cond=Parkinsons%20Disease&term=photobiomodulation
Current hypotheses around the benefits are not from direct absorption of light but from indirect systenic effects mediated perhaps by mitochondria in the blood as well as absorption by immune and stem cells. Michael Hamblin talks a little about this here in a recent presentation he did in South Africa:https://www.youtube.com/watch?v=bPQo6HM_KrQ&ab_channel=BiofeedbackAssociationofSouthAfrica