I can't explain the sight disturbances, however, the sound disturbances sound like a problem with your inner ear and positional changes (lying to standing).
A few years ago, i purchased a device that you plug into the wall that gets rid of bugs in your house, by sending off invisible sound waves. Since then, I get an occassional nagging, pulsating, vibration in one of my ears, that never occurred before I brought that device. I believe it caused a disturbance to my inner ear as well.