Why do your eyes weep when it's out cold

We all know that our eyes tear when the temperature outside is minus, although we really don't know why.

In reality, there is a very important reason for this, it transmits Telegraph.

Actually, that's the way our eyes stay wet enough so we can beat the eyelashes and see.

When outside temperatures are low, the air is dryer, because of the eyes (as well as the skin of lips) dry.

The othalmologist James Horan explained that air and small moisture make our eyes tear.