When I concentrate for any period of time like reading or watching a movie, or using a computer which can vary from one to three hours, my eyes become very strained and can even become blood shot.

You have actually already described what is likely to be wrong, which is that you are straining your eyes. This means that you are overworking the muscles of the eye, which are responsible for ...

Massimo Ranieri performed tonight in the third evening of the Sanremo festival with a red, bloodshot eye, possibly due to a ...