Light Therapy Glasses

I've been using mine for about 6 or 7 years. I have MS and use a wheelchair. The red lenses hlp with my brain, the purple with circulation, and the yellow - seem to help everything. I can lift my feet when I use the yellow for an hour. Gives me so much hope.My son does the battery changing for me as it is fragile for my MS-clutzy hands but they don't have to be changed often.It sounds like a big cash outlay but if you figure out how long these have lasted it's a great investment.6 friends got them too and only one got nothing from them.