What should i do? idk anymore?

Long story short i have had a crossed/lazy eye since i was 2 years old and have always been bothered by it. I spent so much money on optometrists and they all say that surgery isnt recommended as glasses fix the problem and they say to come back when im about 21. Well i am almost 21, have saved money for years in hopes of getting corrective surgery but now my parents wont help me out with this. They say it isnt a big problem but they dont have to live with this problem, i do. I avoid eye contact with anyone at all costs all the time and now im starting to feel like if i will have to suffer with this my whole life. i dont know what to do what to think anymore. glasses definitely do not help the problem as much as they used to when i was 14.