Onion goggles don't have the same effect as, say, beer goggles do. Much like swimming goggles, they have a foam seal around the edges that is designed to keep things out. In this case, they keep out the tear-causing onion fumes and allow you to see clearly as you do your prep work in the kitchen.
Your eyes water when you cut onions because the onion cells have enzymes that, when released, turn into irritating gasses. Once the gas reaches your eyes, the body starts producing tears to cleanse them.
You could still choose to wear swimming goggles to get the same effect, but thebenefit of choosing these is that they simply slip on like regular glasses and don't have an elastic band holding them in place. Plus, white plastic glasses with foam padding are simply all the rage this season. Didn't you know?














