Dry eye disease of dogs refers to a general term for a variety of diseases that cause abnormal quality or quantity or kinetic abnormalities in dogs caused by some reason, resulting in a decrease in tear film stability and accompanied by eye discomfort and (or) ocular surface tissue lesions. It is a chronic disease and requires persistence in treatment. So what are the causes of dry eye disease in dogs? Let me tell you that only by finding the root cause can you effectively prevent it.
1. Drug causes: sulfamic ammonium drugs (some "eye drops commonly used by people") can cause dry eye disease in dogs.
2., Surgery causes: Dry eye disease caused by surgical removal of the third eyelid gland (cherry eyes).
3. Spontaneous and elderly causes: The cause of dry eye disease in dogs is related to the aging of animals and the gradual atrophy of the lacrimal glands.
4. Autoimmunity causes: Dry eye disease caused by up to 30% spontaneously is related to autoimmunity destroying the lacrimal glands and the third eyelid glands. Among the cases of dry eye disease in the ophthalmology clinic of the National Taiwan University Animal Hospital, there is a significant and high proportion of immune abnormalities, including allergic constitution or folliculosis infection.
5. Trauma caused by trauma in the eye socket or under the eye socket: the secretion of tears becomes abnormal due to the trauma caused damage to the lacrimal gland and the third eyelid gland, or the nerves that control the lacrimal gland and the third eyelid gland, causing the secretion of tears to become abnormal.
6. Caused by canine distemper: Canine distemper virus affects the lacrimal gland and the third eyelid gland, thereby causing temporary or permanent loss of tear secretion.
7. Congenital or genetic causes: Congenital acinar hypoplasia often occurs in young or young adult dogs of mini breeds, such as Chihuahua and Yorkshire terrier. In addition, there are dog breeds that are genetically prone to dry eye syndrome (but the age of onset is not certain), which is often related to autoimmune attack on the lacrimal gland. Dog breeds include Marcis, Yorkshire Terrier, Shih Tzu (detailed introduction), Puggo, Pekingese, Boston Terrier, Western Highland Terrier, King Charles Hound, Lhasa, British Cocker Spaniel, American Cocker Spaniel and British Bulldog.
8. The lack of sensory nerve distribution on the surface of the eye is caused by (craninal nerve V).
9. Craninal nerve VII is caused by the lack of parazygotic sensory nerve.
10. Other causes: There are many unconfirmed or unknown factors that have been raised.