[Paula]

Paula asked the Naked Scientists:
   
Why do my eyes water sometimes when I urinate?

What do you think?

[Nizzle]

Does it occur after consuming a heavy onion loaded meal?

[Karen W.]

I have never had my eyes water when I urinate except when I had a bladder infection as a teenager! They watered then because it hurt to urinate!

[RD]

Possibly like pee shivers: a minor short-circuit in the autonomic nervous system.