Eye vision are often not hard to implement. Take a read at any "rebuild your vision naturally" guide, spend 30 minutes to understand them and you're ready to go.
Problem is, you don't see results immediately. It is a natural approach and as with any holistic approach to curing anything - it WILL take time. But with people close to you, people who know love you, convincing you to quit - saying such things would never work, I can't blame you that sometimes you really do feel like an idiot for trying it out.
I know I did. I went through all that.
And so doing eye vision exercises takes a bit of a faith. It takes patience and courage. It's not easy. But when you actually achieved what you set out to, you could show all the skeptics... but more importantly, you could once again see clearly without glasses.