Flashing black spots on eyes?

Yes, that occurs when you look into a bright light or the sun, that's normal, but it's not normal to last an hour and for it to hurt... You could have a stigmatism in your eye. Depending on if you have gles or contacts, they make be irritating the pupil. You also might have very dirty eyes. Every once in a while, clean out your eyes with eyedrops or just clean water.(Perferably eyedrops) I can't tell what it is because I can't see your eyes, but yes indeed a doctor, or eye specialist could when they are with you. Continue to your doctors appointment so they can get a better look at it. Best of luck.