Medically onions is very good for the sight, especially when u are cutting it and water is comng out from ur eyes dats when its more effectve but sha no be small thing o !

To me personally, i do not support the idea of d poster, generally, no matter what u u do 2 d onions will still make u cry 4 sure.
When you slice through an onion, you break open a number of onion cells. Some of these cells have enzymes inside of them, and when they are sliced open, the enzymes escape. The enzymes then decompose some of the other substances that have escaped from sliced cells. Some of these substances, amino acid sulfoxides, form sulfenic acids, which then quickly rearrange themselves into a volatile gas.

The gas reaches your eyes and reacts with the water that keeps them moist. This changes the chemical's form again, producing, among other things, a mild sulfuric acid, which irritates the eyes. The nerve endings in your eyes are very sensitive and so they pick up on this irritation (this is why our eyes sting when we slice onions). The brain reacts by telling your tear ducts to produce more water, to dilute the irritating acid so the eyes are protected. Your other reaction is probably to rub your eyes, but this will actually make the irritation a lot worse, of course, if you have onion juices all over your hands.
So let's cut d whole crap bout cuttin off some part of d onions or soaking dem in water. { NA LIE}.

D best way 2 solve d problem is peeling the onion and then chilling it in the refrigerator before you slice it will minimize the release of gas somewhat, because the change in temperature alters the compounds in the onion. Cooking an onion before you slice it will work also, for the same reason. Another easy solution is to cut the onion under water or run the tap over it as you slice.

Putting the onion in the fridge for 10-15 mins also works great.

interesting! but y should u try to do that when it sort of cleanses the eyes? i will try it though cos its embarassing when ur mascara runs just because u r trying to chop onions.

@ ,mariejane, lol, y don't u try n buy waterproof mascara if u don't want ur mascara 2 be runnin

thanks guys,will sure try out all these suggestions.whenever i slice onions, i'm unable to shut my eyes for 30mins!so i nevergo near onions before i sleep.

Yep the fridge thing works and you could also pour some lemon juice on the onions