Visual disturbances are another common anxiety symptom for me. They are the perfect attention getter and when my anxiety is turned up and my lizard brain looking for things to focus on, there is no better way of getting my attention. I've had nearly everything: floaters, flashes, zig zags, bright spots, migraine aura, trails/after images etc. The one thing I have never had (knock on wood) is a blind spot or loss of peripheral vision. As luck would have it, those are the symptoms that truly warrant prompt medical attention. Multiple doctors, including eye doctors, have explained the other items to me as "normal," "common," and nothing to worry about. The causes vary, but aging happens to be a common cause. Some persistent flashes can be a sign of a retinal detachment, but transient flashes usually aren't.
I think the issue is our hyper focused mind. When feeling anxiety, our minds are primed to notice even the small things - things we normally wouldn't pay attention to. I've been alarmed by a reflection off the beveled edge of my glasses. Now, that's excessive.
Do you have visual symptoms of anxiety?