I also happen to have bad vision and can't see much at all without glasses.
Neither of these are "differences". They're something I have (or had) which is "less" than the average person. I've got less dimensions of sense.
I cried when I could hear for the first time, heard my mother for the first time, it was such a beautiful sensation, like a whole new universe had opened itself to me.
The way the capital D Deaf community considers people who get the ability to hear as traitors is absolutely cult-like in any and every way.