Upon exiting the maxillary bone, the duct continues as a membranous structure along the ventral aspect of the nasal cavity. A distinguishing feature of feline anatomy is the duct's termination. In the dog, the NLD typically opens into the nasal vestibule near the external nares. In the cat, the NLD opens more caudally, usually in the ventral nasal meatus, approximately 0.5 cm to 1 cm caudal to the opening of the nasal cavity. This entrance is typically small and slit-like. An accessory opening has been reported in some specimens, though it is less consistent than in canines.
Bacteria thrive in the damp fur, often creating a noticeable smell. nasolacrimal duct cat
Tears can cause hair to clump, which may painfully rub against the eye and cause scratches. Upon exiting the maxillary bone, the duct continues
Dacryocystitis is a common acquired condition in cats. Clinical signs include mucopurulent discharge that recurs after topical antibiotic therapy, often accompanied by pain upon palpation of the medial canthus. In the cat, the NLD opens more caudally,
Yellow or green discharge may appear if a secondary infection develops. Common Causes
If you suspect your cat is experiencing nasolacrimal duct issues, it's essential to consult with a veterinarian. They can perform diagnostic tests, such as:
The nasolacrimal duct (NLD) is a critical component of a cat's ocular health, acting as the primary drainage pipe that carries tears from the eye into the nasal cavity. While often overlooked, its proper function is essential for preventing chronic eye irritation and maintaining the sleek, clean appearance we associate with healthy felines. The Hidden Plumbing of the Feline Eye