Blocked tear ducts in cats can be caused by a variety of factors. One of the most common causes is a congenital defect, where the tear duct is abnormally developed or narrowed. This can lead to a blockage of the duct and prevent tears from draining properly. Other causes of blocked tear ducts in cats include:
A blocked tear duct (epiphora) in occurs when tears cannot drain through the nasolacrimal duct into the nose, causing them to spill over onto the face. While often a cosmetic issue, chronic blockages can lead to skin infections and irritation from moisture. 🛠️ Common Causes
The treatment of a blocked tear duct in cats depends on the underlying cause and severity of the condition. Treatment options may include: blocked tear duct cat
: Swelling from respiratory infections (like feline herpesvirus) can narrow or close the duct.
epiphora (excessive tearing). Vetlexicon +1 Watery Eyes: Constant wetness in the corners of the eyes or beneath them. Tear Staining: Reddish-brown or dark discoloration of the fur along the path of the tears. Skin Irritation: Chronic moisture can cause redness, itching, hair loss, and "facial dermatitis". Odor: Foul-smelling bacteria may grow in the damp fur. Discharge: Blockages caused by infection (dacryocystitis) may produce milky, yellow, or green mucus. VCA Animal Hospitals +6 2. Potential Causes 19 sites Lacrimal Duct Obstruction in Cats | VCA Animal Hospitals Lacrimal Duct Obstruction in Cats * What is the lacrimal duct? The lacrimal duct is part of the nasolacrimal system, which consist... VCA Animal Hospitals Disorders of the Nasal Cavity and Tear Ducts in Cats Blockage of the Nasal Duct (Epiphora) Occasionally cats will experience a chronic overflow of tears due to an obstruction of the n... MSD Veterinary Manual Stenting of a Partially Obstructed Nasolacrimal Duct Using A ... Introduction. The nasolacrimal (NL) duct is a drainage system that drains conducts tears from the ocular surface to the nasal cavi... PubMed Central (PMC) (.gov) Show all Facial Anatomy: Common in brachycephalic (flat-faced) breeds like Persians and Himalayans due to the shape of their muzzle. Inflammation/Infection: Swelling from conjunctivitis or respiratory infections can pinch the duct shut. Physical Obstruction: Foreign material (e.g., grass seeds) or inflammatory debris can lodge in the duct. Hereditary Defects: Some cats are born without a "puncta" (the opening where the duct meets the eye). Dental Issues: Because the duct passes near tooth roots, abscesses or severe dental disease can compress it. Wiley Online Library +11 3. Diagnosis Veterinarians typically use the following methods to confirm a blockage: Fluorescein Dye Test: A yellow-green dye is placed in the eye. If the duct is clear, the dye should appear at the nose or mouth within 5–10 minutes. Duct Flushing: Under sedation, a veterinarian may insert a tiny tube (cannula) to flush saline through the duct to check for resistance. Imaging: X-rays with contrast dye (dacryocystorhinography), CT scans, or MRIs can identify tumors or structural abnormalities. VCA Animal Hospitals +3 4. Treatment Options Medical Management: If caused by inflammation, vets may prescribe antibiotic or anti-inflammatory eye drops. Manual Flushing: Sometimes the act of flushing with saline is enough to clear minor debris. Surgical Correction: Imperforate Puncta: Creating a surgical opening for the duct. Stenting: Placing a tiny tube to keep the duct open during healing. New Pathway: In severe cases, a new drainage route to the nose or mouth may be surgically created. MSD Veterinary Manual +7 5. Home Care & Prevention Daily Cleaning: Gently wipe the under-eye area with a warm, damp cloth to prevent tear staining and skin infections. Veterinary Monitoring: Seek a vet if discharge changes color, the eye appears painful (squinting), or the skin becomes raw. Vetericyn Animal Wellness +2 Is your cat showing other signs like Blocked tear ducts in cats can be caused
Diagnosing a blocked tear duct in cats typically involves a physical examination and a series of tests. Your veterinarian may perform the following:
: "Smush-faced" (brachycephalic) cats like Persians and Himalayans often have shallow eye sockets or kinked ducts. Other causes of blocked tear ducts in cats
While blocked tear ducts in cats can be a challenging condition to prevent, there are steps you can take to reduce the risk:
