What does eye flashes due to posterior vitreous detachment look like? streaks of bright light or vision flickering on and off or is it something else?

Vitrous : what use?: Vitreous is the gel that occupies the middle of the eye ball. Lightning flashes are generated by vitreous tugging on retina during eye movement. When a posterior vitreous detachment occurs, there may initially be residual areas where the vitreous remains attached to the retina, causing these light flashes. Patients have described these flashes as "a sparkle or twinkl