Can Chopping Onions Damage Your Eyes?

"Chopping onions can cause some burning and irritation and tears. Other than that, it's pretty safe on your eyes. It's a temporary sensation with no known long-term effects, nor will it worsen any other conditions, like pink eye," Rosa said.

Can onions cause blindness?

Dust from soil, the onions' skin, having dirty hands and then rubbing the eyes and attar from the onions could cause cornea inflammation. Then late treatment and wrong treatment for cornea inflammation led to blindness, experts from the institute said.

What does cutting onions do to your eyes?

When an onion is sliced or diced, the onion's cells release these compounds into the air. When this occurs, "enzyme" works to alter the amino acids into lachrymator compounds. This form of sulfuric acid irritates the nerves around the eyes making them tear.