1. Keep onion in the fridge:
If you want to avoid burning your eyes while cutting an onion,put it in the fridge and cut the onions into thin slice. A cold onion produces fewer irritants, making the chopping process more comfortable.
2. Ventilation is important
Chopping onions in a well-ventilated kitchen with a fan or open window can help disperse the irritants, keeping them away from your eyes.