And that’s where onion crosses the radar in a way that bothers.
Think of the lens as the lens of an old camera. When it’s clean, the image enters sharp; when it becomes a greasy filter, everything loses contour, contrast, and depth.
Raw onion is sold as if it had the power to “sweep” that internal dirt. The pretty name for that, in practice, is an internal bath of sulfur compounds and agents acting like small molecular brooms, trying to reduce the environment feeding eye tissue degradation.
The first sign many notice isn’t movie magic. It’s the feeling light stops tearing the eye so much, letters seem to fight you less, and the face of the person in front of you regains edge, instead of becoming a tired blur.
Without that kind of support, the lens keeps receiving daily blows like a windshield exposed to dust, sun, and acid rain. With time, opacity gains ground, and the eye starts working like a car with the glass fogged inside: you even see, but see badly, with effort and irritation.
