As a matter of fact, the answer is absolutely yes, and i can provide reliable science data for this point. Our brain is connected with twelve pairs of cranial nerves, and five of them link the eyes, which respectively in charge of eye vision and eye activity, accordingly, a few of them link the ears, wihch administrate the listenning. Therefore, the less cranial nerves keep in contact with eyes, the more they will concentrate on our ears. According above scientific explanation, we can obviously make sense of reason that why people with bad eyesight must have better hearing. Hope you can make it clear after explanation, thanks for consulting.