• 5 months ago

    Visual anomaly, not floater or flash

    When I flick my eyes to the right or upwards, especially with a bright background, a momentary crescent of light appears in my left eye (lasts a split second). It looks exactly like an afterimage. First noticed this 3 days ago, but possibly might have been present a long time since can be confused with a floater. However, it is not a floater, and doesn't seem to be a flash as not bright enough. Might this be serious?