I don't.. my flashbacks are mostly sensory... a stab of pain, physical pressure, body flooded with adrenalin and stress hormones, sounds, smells, etc. The things I see are usually visual fragments of what was seen at the time for me. 1st person perspective.
I have had a couple of flashbacks that were from the third person perspective and that was when an alter was "out of body" at the time of the trauma.