Interesting to note that NIR light can penetrate deep into the body. There is research into using this as a medical imaging technique [0] and also research on i

Interesting to note that NIR light can penetrate deep into the body. There is research into using this as a medical imaging technique [0] and also research on improving age related vision loss [1] [0] https://youtu.be/awADEuv5vWY https://youtu.be/awADEuv5vWY [1] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4768515/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4768515/