Do you honestly believe Doctors are correct 100% of the time? I once had a Doctor tell me my side pain was caused from inflamed cartilage around my sternum, turned out a few weeks later it was Stage 4 Cancer, that's a pretty incorrect diagnosis.
I can't say these type of glasses actually work as I've never had a reason to use computer oriented lenses but taking a single Doctors word as definitive proof that they don't work is laughable.
That said I agree with some of the others about shaming the company this early in your issues, you should at least try to get in contact with the company and try to get it resolved before going around and preaching that no one should buy their product. Some times errors in manufacturing get missed and problems do occur in shipping all the time so you should definitely give the manufacturer time to make things right before blowing your top. If they refuse to correct the issue then go ahead and enjoy ranting about the horrible product.