DUCT WORK

A painful, squinty, swollen eye is an obvious cause for concern, as is an eye with thick or discolored discharge. What do you make of a horse whose eye is simply watery, though?

Absent any other signs of trouble, a horse who consistently has tears running down his face may have a blocked tear duct. Technically called nasolacrimal ducts, these tiny passages drain excess tears from the eyes through