Anxiety & Flashing lights ???

[immolate]

Hello,about 2 weeks now i have had varying degrees of flashing lights in my vision. At first they were in both eyes and zig zaggy or shimmery, then they were like white camera flashes, and now,they are seemingly only in my right eye. It's only when i move my eyes to the extreme left/right/up/down, and the flashes i experience atm happen when i look to the right in the dark,and look like small, white flashes.
I also am increasingly aware of floaters and i also am suddenly experiencing blue field entoptic phenomona (when looking at blue sky).
Before these flashes, I had headaches for a few days and eye pain when i moved my eyes left/right/up/down. I'm still getting headaches occasionally but not every day.
I have been to the optometrist already, who dilated my pupils and said my retinas were fine!!
Things worth mentioning:
- I had Optic Neuritis 5 years ago; solved with steroids
-I have severe anxiety, particularly health anxiety. Have recently started therapy
-i'm far sighted in my left eye and short sighted in my right eye (lol) so occassionally wear glasses,have been doing more so recently

Please help me!! Is it anxiety?? Is it me making these things happen because the first flash spooked me so much???

[immolate]

Hi - no that doesn't happen. The flashes are only noticeable at night/in dim or dark lighting. The headaches are erratic - I had about 2, maybe 3, this past week at random times.

[Paxiled]

Do severe headaches follow this experience within about a half hour?  Could indicate a migraine condition.