<span>Watery eyes can defend you from dust or any factors that can directly enter your eyes. Watery eyes can get rid of everything that is bothering them like chemicals, salt, and pepper. If you notice, when you slice an onion, your eyes will slowly be in tears. This is to protect your eyes from the substance that an onion excreted when it is sliced.</span>
Pelvic inflammtory disease.
Hope this helps
I would have to say all the above.
