I reported it , any questions ? <| sep |> In general , the experience of seeing light without it actually entering the eye itself , that ' s what ' s known as a phosphene . They can be directly induced by physical , electrical , or magnetic stimulation of theretinaorvisual cortexpressing on your eyes , for example , will make you see swirls of light and colour . If you ' ve ever had a fainting spell , or a low blood pressure episode , you might have seen sparks , or ' stars ', in your vision . Those are phosphenes , too . They ' re also common in people who go for long periods of sensory deprivation , specifically without visual stimulation . In that case , it ' s often calledprisoner ' s cinema . <| sep |> This is more a problem of perception rather than a problem with PHP itself . It ' s one of those articles where the author is fighting a nonspecific collective straw man , who doesn ' t like PHP . The solution is go back to work .