Am I going to become blind?!
Question: Am I going to become blind?
Answers:
First of all your eyes are not actually permanently affected, at least not by normal means as far as I know, by whether or not you choose to wear glasses. The eye is a delicate device and near- and far sightedness are defined by the shape of your lense (look upthe anatomy of the eye) which can grow in different shaped depending on your genes and so on. But if you need glasses and don't wear them you will definitely strain them and that can affect your vision until the muscles loose up again. Why won't you wear glasses? At least wear contacts, your life will be easier.
The pressure between your eyes could definitely be because of you straining your vision. It can give you some nasty headaches too. It could also be some sort of eye migraine, or it could be something completely different. I can't say what the thing you feel in your eye could be. Go see a proper eye doctor and let them have a look.
You need to see an ophthalmologist, an eye Dr. Don't wait and risk your eyesight.