As far as I know anyone can do this, but apparently the intensity depends on each individual, and there's people who claim they cant see them at all.
I have a crazy sensitive perception of them, wich somehow got even more identifiable after I got some very nasty eye floaters a few months ago. Now I can easily see them on almost any bright colored surface without concentrating, they're just there.
This is a good video on it: http://www.youtube.com/watch?v=FkUwogWzSwk
and even though the most effective way for me to see them right away is on a back-lit white screen, most people seem to notice it on the sky, so a good way to test would be to fullscreen this:
step a bit back from your monitor and try to zone out
or just follow the video posted above
it's nowhere near as bothersome as eye floaters but it blows my mind that we can actually see this.
I have a crazy sensitive perception of them, wich somehow got even more identifiable after I got some very nasty eye floaters a few months ago. Now I can easily see them on almost any bright colored surface without concentrating, they're just there.
This is a good video on it: http://www.youtube.com/watch?v=FkUwogWzSwk
and even though the most effective way for me to see them right away is on a back-lit white screen, most people seem to notice it on the sky, so a good way to test would be to fullscreen this:
step a bit back from your monitor and try to zone out
or just follow the video posted above
it's nowhere near as bothersome as eye floaters but it blows my mind that we can actually see this.