There's an Itch in my Eye!

There must've been an itch in your eye too, somewhere in time and space. Something has fallen in your pretty little eyes or the wind just blew too fast, its more annoying than anything if you're trying to concentrate!
And my maa (Mom or Mummy) came up with something ordinary (read "brilliant") that made me "Wow! How did that happen?". An instant remedy to an eye-itch
So, it went like this: I was coming back home in my car from Indore, (That's in Madhya Pradesh India). Wind wasn't something as such, but dust kept pulling on us even when we kept our car packed with the A/C running. Nonetheless, these annoyance don't resist creeping up on you!
Something went in my eye. And it was like, "Chillies wouldn't have been worse, if they were in my eye!". Kept on brushing my eye with my hands to get that out. But of no use! That thing was still inside and kept annoying me. I couldn't even open eye for a second or two.
Ah! Then, I told my mom.
She came up with this: "Brush the other eye with your hand."
I was, "What?". But she insisted and I did just that. She said to repeat it until I felt good enough. So, I kept on doing it, and yes, my itch did go away! Just how? I couldn't figure that out as of now, but I'm sure I would but for now:

PROBLEM: Eye Itch
SOLUTION : Rub the Other eye that's NOT itching.

Scientific Reason: Unidentified