I have the peripheral flashes. Started as red circular images bilaterally, evolved into more linear BRIGHT white flashes. I also see waves when near change in temperature, both into heat or cold. Sometimes I see pins of light, sort of pixilated, vision. My Neuro-Ophthalmologist said this is similar to “visual snow” (google it) and she sees long covid patients with this all the time. She said it is a symptom of significant inflammation of the brain and up-regululation (extremely more sensitive) optical neuro pathways. She recommended CoQ-10 100mg 3 times a day, Riboflavin (vit B2) 400mg at night, and Magnesium Glycinate 200mg twice a day because these are anti-inflammatory for the brain. I am taking these and still have some flashes, but less so. I have no headaches and never had migraines. This doctor impressed me in a sea of disappointing specialists. Dr. Chen. UW-Madison.