In myopia the lens is bending the light too much even in the most relaxed state. Thus the image is produced in front of the retina. If the object comes closer the lens just adjusts a bit less than a healthy eye and the myopic subject is able to see clearly.
Why is the hyperopic eye not able to do that? If the object is far away, could the lens not just bend a bit more to elicit normal vision? So, why is the Myopic eye able to adjust its focus, but the Hyperopic not?