Acquired: Often associated with conjunctivitis, lacrimal duct inflammation and trauma. Inflammation of the nasolacrimal duct can be secondary to upper respiratory tract infection and maxillary dental disease. Due to the stimulation of long-term chronic inflammation of the lacrimal duct, the lacrimal duct epithelial cells swell, tissue hyperplasia, and scarring, causing lacrimal duct stenosis or obstruction. Such as the obstruction caused by lacrimal duct inflammation, in addition to the inner canthus with tears, but also pain, swelling, inflammatory secretions, etc., severe cases, the performance of suppurative conjunctivitis, eyelid abscess and so on.
Symptoms: There is purulent secretion attached to the inner canthus of the dog’s eye, and tears flow out continuously. The underside of the corner of the eye is dyed with red hair. Due to the long-term impregnation of tears, the skin under the corner of the eye has a little hair loss. The dog’s head was raised, and 1% fluorescein solution was instilled in the conjunctival sac of the affected eye, and then the head was lowered. After a few minutes, no dye appeared from the nostrils, which proved that the nasolacrimal duct was indeed blocked.
For the treatment of the disease, the cause must first be identified. Depending on the cause, different treatments are used. For those secondary to other eye diseases, the primary disease should be treated first, antibacterial and anti-inflammatory. To exclude foreign bodies or inflammatory products that may exist in the nasolacrimal duct, nasolacrimal duct irrigation should be performed. Because dogs are often restless, in order to prevent accidents, general anesthesia is generally applied to dogs.
Firstly, general anesthesia was given to the affected dog, and 0.5 mL of Sumianxin was intramuscularly injected according to 0.1 mL/kg body weight. 2 ~ 5 mm from the eye canthus to find the puncta, and insert a human medical nasolacrimal duct irrigation needle along the nasal cavity at the puncta. When inserted to a depth of about 1 cm, connect the syringe and rinse it repeatedly with the 1% procaine penicillin solution prepared in advance. Until you feel that the resistance continues to decrease during flushing, and there is a slow flow of liquid from the nostril on the side of the affected eye, gradually increasing, from point to linear outflow. At this time, the nasolacrimal duct is unobstructed and the flushing is successful. Then the dogs were exposed to Baoding, and 0.5 mL of Suxingling was intravenously injected.
