I sow these zigzag lines In my eyes only two times .the first started about 4 month ago and lasted for 20 min.I searched and know it is ocular migraine I was so worried that I was going to loss my vision then it stopped and headache started. Then in the past month I started to see floaters in my left eye but my eye doctor said my retina is fine i it is just dry. Nowadays I see I see a black spot that look like letter C when I look up ward in my right eye. Please help me. Sorry if my English writing is not correct that is because I am not native English speaker