Why are a dog's eyes tearing up? - briefly
A dog's eyes may tear up due to allergies or irritants in the environment, such as smoke or dust. Additionally, excessive tearing can be a sign of an eye infection or a blocked tear duct.
Why are a dog's eyes tearing up? - in detail
A dog's eyes may tear up due to several reasons, each requiring a different approach to diagnosis and treatment. One common cause is an obstruction in the nasolacrimal duct, which drains tears from the eye into the nose. When this duct becomes blocked, tears cannot drain properly, leading to excessive tearing or epiphora. This condition can be congenital or acquired through trauma or infection.
Another possible cause is irritation of the eye's surface, known as conjunctivitis. Irritants such as dust, allergens, or foreign objects can stimulate tear production as a protective response. Breeds with prominent eyes, like Pekingese and Pugs, are particularly prone to this condition due to their facial structure.
In some cases, excessive tearing may be a sign of an underlying health issue. Glaucoma, for example, is a serious eye condition characterized by increased intraocular pressure. While dogs typically do not exhibit the same symptoms as humans with glaucoma, such as severe headaches and vision loss, they may show signs like redness, cloudiness, or excessive tearing. Similarly, dry eye syndrome, or keratoconjunctivitis sicca, can lead to overproduction of tears in an attempt to compensate for the lack of natural lubrication.
To determine the cause of a dog's tearing eyes, veterinarians may perform a thorough examination, including a Schirmer Tear Test (STT) to measure tear production and assess the health of the cornea. Depending on the findings, treatment options can range from simple eye drops or ointments to more complex procedures like surgery to clear blocked ducts or reduce intraocular pressure.
It is essential for dog owners to monitor their pets' eyes regularly and consult a veterinarian if they notice any changes in tear production or eye health. Early intervention can prevent discomfort and potentially serious complications, ensuring the overall well-being of the animal.