Actually, it's my 15 year old son. He is on the higher end of the Autism Spectrum and I just can't get clear info. He is newly diagnosed with CFS. Questions: Do any of you suffer vision problems with this? He is totally unable to read. Everything close range is blurry. (He has an appt. with an ophthalmologist Thurs but I would like to go with some wisdom from you all). Also distant vision is much worse. He has always had incredible vision. This also explains his constant headaches. How much are you able to push yourself to do as far as activity? I just can't tell where he is in this. How far is too far? I know that's a toughie to answer but throwing it out anyway. Thanks and sorry this is so long. Trust me when I say it could be so much longer!!