Tearing eyes. Tears out of proportion. Eyes need tear film to keep the cornea clear of any local or environmental foreign materials. The tears are produced by local as well as accessory lacrimal glands and are constantly being replaced by evaporation or suction by the nasolacrimal system into the nose. Watery eyes can result from many causes, some of which being too much production or resistance to outflow.
Tear overflow. Eyes that have water dripping over the edge of the lids onto the cheek are "watery eyes". This is usually due to some degree of outflow obstruction for tear flow but can be due to conditions increased tear flow and the intermittent overflow of tears which occurs paradoxically in many less than normal tears.