[CITATION NEEDED] It's nice of you to revive the thread in order to post info that's in direct contradiction to the information available on wikipedia with no sources. Granted, wikipedia isn't always the most reliable, it's certainly more reliable than random uncited internet opinion. DDD self-diagnosed as what he was seeing being a firefly aura (which is, contrary to what you've said, neurological and NOT a physical symptom - as opposed to floaters which ARE a physical symptom) which, being a type of aura, is a a neurological condition related to migraines, seizure, and stroke. [quote source] Emphasis added. The specific subtype, firefly aura: Cerebral infarction is a stroke resulting from blockages in the blood vessels in the brain. So it's saying that they've been described in cases where the aura was persistent, but without [this specific type] of stroke involved. On the other hand, Floaters are a physical symptom caused by deposits released on the inside of your eye into the vitreous humor (the clear gel that fills your eye). It's not actually blood vessels in this case, but either foreign bodies that have entered the eye, or bits of the eye and vitreous humor itself that have been released most commonly as a result of degradation with aging, or eye damage. So I don't know what you were actually describing, but it's neither of the medical conditions referred to as firefly aura or floaters. I'll grant, however, that DDD probably doesn't know what he's talking about either and is experiencing nothing resembling what he claims, as usual.