Is the eye doctor the same doctor who put the weight in? If not, ask the doctor who did,,,
Seems like the techs at the imaging center would be more concerned to look it up rather than dismiss you. Maybe call another of your doctors or a hospital imaging department to see if someone could answer the question,,,
I just personally don’t think your doctor is correct,,,, but I’m not a doctor so that’s just my 2 cents worth of advice
Call today before you cancel test., ,, fact he hasn’t returned call says something! I think there are several of us that have had it done.