It can be possible that optic neuritis may lead to watery eyes. Optic neuritis is a kind of inflammation of the optic nerve which is the structure that connects the eye to the brain. The optic nerve, consisting of nerve tracts that originate in the retina of each eye carries visual information from the retina to the nerve cells in the brain stem, where the information is relayed to the area of the brain that recognizes vision. There are other more common symptoms that caused by optic neuritis. For example, one of the major symptoms of optic neuritis is the loss of vision, which is frequently maximal within one or two days and then varies from a small area of blurring to a complete blindness. There are other symptoms such as distorted vision, reduced color vision, loss of contrasts, and washed out or less vivid vision than normal.Most people who develop optic neuritis experience eye pain that is worsened by eye movement. Pain associated with optic neuritis usually peaks within one week and then goes away within several days. If you have any one of the symptoms mentioned above, you had better go to the doctor's for an examination to find out the exact cause in case of a more serious condition.