Well, actually it is dangerous to have ammonia into your eyes, for they can just infect your eyes, leading to some eye problems. For example, it will just make your eyes become burning, itchy. Also, eye pain will be possible too. So you need to rinse your eye with a steady stream of water for at least 30 minutes. And also, you should use the cleanest water you can get to quickly. Of course, you need to move your eyeball in all directions to make sure that all the parts are rinsed. Finally, just have some pure water clean it carefully.