Here is what I just paid for the eye exam from last week. I went to an opthamologist as you said but I'm guessing an optometrist can also do that? You might want to call and ask as I dont know if those types of doctors can do that.
My bill shows a charge of $150 for compreshensive eye exam and $40 for refraction routine, whatever that is. But then the totals come down because of insurance, and out of pocket I paid $10. The good thing is insurance lowers the cost of this but of course you are paying for that insurance so its not like you dont pay for it.