@maliheh

Hi,

I am replying because I had a retinal detachment in the 1980s and have dry macular degeneration and always tell anyone who is experiencing anything unusual related to vision to please get to an opthamologist asap. Since you have seen your doctor and he told you to go to the ER if the flashes happen before you see him again...then yes...do not hesitate. He is obviously concerned that might happen.
It is of concern but could also be because of his headaches. You are naturally worried. Have all your information about the tumor that was removed printed out, names of doctors etc. and keep that in your emergency information material....even on your phone is okay. It is of a tremendous help to the ER staff who don't really know you or your son if you have this information and emphasize to the front desk that it is an emergency per your Doctor's advice. The problem with ER doctors is that most are not trained in this discipline. However, the good ERS have on call opthamologists . Better yet, if your opthamologist is on staff at the hospital you choose.

So don't let your son know you are anxious but I assume he knows to tell you if anything untoward happens to him. Just go no matter the hour. Sometimes you need to be a bit etc.of a pest in the ER if there are a lot of people.
So preface your "speech" with "My son is........explain...... and my Doctor (name) told me.......

Hopefully this won't happen ...didn't mean to go on so much....but my precious vision it a top priority for me.

FL Mary