These $20 Onion Goggles on sale at Amazon boast a "comfortable foam seal that protects eyes from irritating onion vapors", "anti-fog lenses that offer maximum clarity" and a "unisex design that fits most face shapes," hydrocephalics excluded. The only thing I'm really sure about is they seem like an attractive accessory for the fashionologically-obsessed, superstar vegetable dicer.
My real reason for posting: years back, a friend of mine showed me how to quickly dice an onion, mainly through the application of a few preliminary geometric cuts that largely allowed the entire onion to fall apart. This minimized tears because the job was done more quickly. I remember being impressed and then completely forgetting how to do it. Can anyone supply instructions?