Tears are necessary to keep our eyes moist and healthy. The lacrimal gland and other small glands inside the eyelid and on
the white part of the eye constantly produce tears to keep the eye healthy. Tears drain from the eye through two small openings
called upper and lower puncta located at the inside corner of the upper and lower eyelids near the nose. Tears move through a
passage called the canaliculus and into the lacrimal sac. They then drop into a tear duct called the nasolacrimal duct and drain
into the back of the nose and the throat. That is why your nose runs when you cry.