When you cut an onion, it releases substances that cause burning and tears. That’s normal. What’s not normal is thinking that those tears reach the lens of your eye and clean it. They don’t.
Tears moisten the surface of the eye, which can provide temporary relief from dryness. But cataracts are inside the eye, not on the outside. That’s why onions can’t correct the cloudiness that blocks light.
Furthermore, putting onion juice directly in your eyes can cause irritation, redness, and even damage to the eye’s surface. It’s not a harmless remedy. It’s not a home remedy. It’s not a cleaning solution.
Let’s look at the difference in a simple way:
What many people believe | What really happens
Onions eliminate cataracts | There is no reliable evidence of this
Tears clean the lens | Tears only act on the surface
If it burns, then it works | Burning only indicates irritation
If I see better for a while, I’m cured | Temporary improvement does not confirm a cure
