Seeing bright spot after staring at light

[Jamesnewick]

Okay, I'm 20 years old, had a good eye exam couple months ago, not sure if this is normal but sometimes at night after staring at a bright light source such as the tv for a couple hours then turning off the lights for bed, I notice a dark shadow after image of whatever shape of light I was staring at it, which is to be expected, although then I close my eyes for abit and the after image now turns into a kind of bright circle only visible when I blink quickly? I'ts light the afterimage is slowly decreasing in size. It's in both eyes same exact spot and slowly fades away. it does NOT happen if I'm in a dark room and haven't been staring at a light source.

[JohnHaganMD]

Like many young people with good eyes and a normal eye exam you are becoming aware of entoptic phenomena. Read the section on wikipedia.com about the various types that many people can see.

[ToryCUBE]

Thankyou so very much.

[JohnHaganMD]

Thanks and thanks for saying thanks. Amazing how few posters do so.