Absolutely have this checked out. I ws watching TV one evening and without any warning or symptoms I lost the vision in my right eye. It was plaque in the artery and is not reversible. A few months later though I had some flashes of light and lost the peripheral vision in that eye. (In the beginning it was just the vision in the top portion of my eye. I know it sounds weird, but different areas of the retina see different angles.) Did your vision return?
You can have an ocular migraine without experiencing flashing lights. I would always follow up with a Doctor if this is the first time you had these symptoms though.
Thanks its my hubby thats got it .His vision went back to normal . the doctors sent him to have tests they think it was a T I A ( mini stroke ) thankyou for your reply ;-)