You should not give any medicine to your dog for watery or runny eyes because use of eye medicines without proper diagnosis can further aggravate the condition. Dogs have watery eyes due to irritations in the eyes. These irritations are caused by many factors. These can be
- Glaucoma
- Conjunctivitis due to virus or bacteria
- Hair in the eyes
- Abnormal growth of eyelashes
- Problems in the eyelids
- Abnormal tear drainage
- Allergy to air pollution, smoke and dust