It would be helpful if we knew what light wavelength was used in these tests. It could be anywhere between UV to infrared? Aren't there other reports showing that exposure to computer displays or fluorescent lights (bluish light) could lead to PD? If the available blue led, sad box light is the wavelength used in this report, it could be very helpful for those with PD. If anyone can find the wavelength they used, it could be useful.

http://photopharmics.com

https://clinicaltrials.gov/ct2/show/NCT02175472

http://photopharmics.com/PDF/phototherapy.pdf

Well... I have learned through studying homeopathic principiles thatt what can cause a problelm in large doses can cure it in very small doses....

My infrared intranasal light is dual frequency (652nm/940nm) and tho effect is subtle I have been delaying my first dose of med in the morning an hour (ever vigilant for opportunities to reduce med)sometimes two hours and feel a deeper sense of calm. I really like it tho it doesn't corroborate the findings in their publication. having said that I also use blue spectrum light in the form of specially formulated sunglasses. perhaps time of day is also at issue here as natural light holds blue frequencies in morning red in afternoon or is it the opposite?

P.S. My earth pulse device that I use for sleeping oscillatees between two frequencies (also) https://earthpulse.net/

found an interesting if not useful article that answers my question in previous post: blue frequencies are more naturally (sun sourced) in the mornings- red in afternoon and evenings. I do love firelight !

http://wellnessmama.com/91779/blue-l...mprove-health/