Anybody wear contact lenses? If so, where do you do your eye exam? I had to renew my prescription today and did a walk-in at the Vision center at Walmart. They gave me a prescription slightly different than what I've been wearing for 8+ years. I suppose my eyes could've gotten worse with age. BUT what is weird is the entire exam was done by a receptionist who had me look into a machine. This VirtualBoy thing just flashed a picture of a farm with a red barn in the center repeatedly. Sometimes fuzzy and sometimes sharp. I think it basically estimated/guessed my power somehow. The tech sent me to the doctor who signed off on the prescription without doing a manually check. Does this seem legit? Or should I get it redone somewhere else? I don't know if I should trust this walmart Virtual bob thing with my eye.