Hi, I bought an Oakley recently.. I noticed I get dizzy when wearing it for a period of time.. I believe its considered as wide frame.. what can I do?

This is my first time investing in an expensive sunglasses, I noticed the dizziness during testing but the sales person say its normal when we keep trying on the glasses, put on and take off shades will cause dizziness..

I used to own a cheap version of aviator glasses and I have no dizziness when wearing it for a long period of time..

So does it mean the Oakley glasses doesnt suit me? Usually can I return for exchange? Or is there anything I can adjust at the glasses? Temple?

Help me..

I should have 20/20 vision..

Mine is black lens only, not colored.. hmmm