I had a bad dizzy/light headed experience today, for the first time ever. I was having eyes tested. Had 4 of the tests. Looking at red house each eye. Then air puffed onto eye. Had to stop. Hate it. I jump 6ft. Then lights flash, say number you see, each eye. I then had to move chairs. I had to pick my bag up and as I placed it on the floor and stop up, I nearly fell, fell onto wall, grabbed back of chair and my legs went to jelly, head was swimming, eyes were dilated couldn t focus. My head was wobbling. I was shaking and v. pale apparently. It took over half an hr for me to cal. Down. My husband is v worried. Had loads of stress this yr. I ve got bipolar and under active thyroid. I take meds for both. Sodium Valproate, sertraline. And LEVOTHYROXINE. I slept from 6-9 when home and my eyes still don t feel right. Feel swimmy can t focus that well. I m extremely tired and stressed anyway.