I heard some asian friends talking about these as lunch, and making their eyes bigger, I think it's bull.
Asians (and any other types of eyes that are deemed 'different') are beautiful, and there is no reason for them to try and change what they were born with. Same with people who want bigger eyes. You were born with your eyes. You will die with your eyes. When you're old and can't put in those contacts anymore, you'll have those eyes, so you should probably just try to like them, and don't fake it up with things that'll probably hurt your eyes anyway.