In response to top of thread, retinal detachment does usually start with new floaters.

My first floater came with an unusually timed cluster headache ( like a migraine but usually with predictable timing ) so I had accompanying visual auras. Because I didn’t recognize it as a cluster I described it to the on call eye doc as new floaters and sparkles. That got me an emergency trip to optical ER and a slightly disappointed surgeon.

I thought I had them when I was young, but I learned they were just a form of phosphenes.