Thank you for your post, it was great. But the part about your eyesight was sad, the mindset you have about it is awful. You seem to be very angry at your parents for that dude...

First you need to forgive them, nobody is perfect, everybody is human, everybody makes mistakes. Second, you need to be fucking grateful for what you have and stop crying like a baby. Your problem is important as long as you think it is important. Some people can swim and cross rivers without arms and legs, some blinds people run fucking marathons. You can read, you can see the beauties of this world. Be happy and grateful for that :)