LLLT is also used to mean Low Level Light Therapy as well as Low Level Laser Therapy. The laser people try to say laser is better but watts/joules are the same either way. The laser people claim laser is directed better but the research shows no difference. What matters is the watts/joules and wavelength. ~980 nm is optimum but research shows 625 nm and up are beneficial at stimulating cellular repair. You can buy LED systems with a flexible wrap around application.

There are laser diodes. They have been using them in printers for decades.

btw, Sign up for the email notification at the Kathie Ireland web site and they send you an email with a 15% discount code. (enjoy15nov) http://revivelighttherapy.com/collec...-light-therapy
$84.15 is just 2 co-pays to see my PT with his expensive system.

It appears the big difference is the kind of FDA approval obtained. The LED has an exempt GRAS (Generally Regarded as Safe) approval so they cannot claim to treat a medical condition. They can only claim to treat the symptoms of a medical condition (pain) whereas the laser system can claim to help with healing.

Mine is being shipped. I'll report back in a few weeks. Any improvement with my painful shoulder will be worthwhile. I don't plan on using it for my PCS as of yet even though it is the wavelength research says helps with PCS. http://www.kurzweilai.net/light-ther...brain-injuries