In all the diagrams showing a near/far sighted eye, the image is formed either in front or behind the retina. But what if the person tries not to focus at the object he is looking at? What I mean is that if the person tries to focus his eye as if he was looking at an object farther than the object really is, the image will be formed on the retina(in case of near sightedness)and the reverse can be done for far sightedness, will this method work?
Well that's why short sighted people can still see at all. Their vision tries to accommodate with more or less difficulty because of extra muscular and attentional effort. But there is a limit to what the will can do to compensate for an imperfect optical system.