A conjunctivorhinostomy is a surgical correction of the total obstruction of a lacrimal canaliculus by which the conjuctiva is anastomosed with the nasal cavity to improve tear flow.

The dye should drain with the tears through the lacrimal duct into the nose within 2 minutes.

The superior and inferior lacrimal ducts serving each eye were likewise unremarkable.

Ordinarily tears are carried off by the thin lacrimal ducts placed at the inner canthus.

Tetrapods are also equipped with a lacrimal duct, or tear duct.

The posterior pair of the openings was then free to form the lacrimal duct if a migration caused them to come in contact with the eyes.

Bochdalek's valve: a fold of membrane in the lacrimal duct near the punctum lacrimale.

In this stage, the whites regain their normal color, but the irises become silver due to leak of Quicksilver through the host's lacrimal ducts.

Lacrimal duct stenosis resulting in epiphora (i.e., excessive tearing) occurs in approximately 80% of patients.

His name is also associated with "Desmarres' dacryoliths", defined as concretions consisting of Nocardia species, located in the lacrimal ducts.

The lacrimal duct, nasal bone, nasal cavity, vomer, maxillary sinus, cribriform plate, and ethmoid cells are often missing on the involved side.

Cocaine was historically useful as a topical anesthetic in eye and nasal surgery, although it is now predominantly used for nasal and lacrimal duct surgery.

In response to strong emotions the lacrimal glands are particularly active, and secrete tears past the capacity of the lacrimal ducts, even at their best, to dispose of them.

Rather, they act as specific surface recognition molecules, allowing the targeting of a particular bacterium to a particular surface such as root tissue in plants, lacrimal duct tissues in mammals, or even tooth enamel.

His description of the lacrimal ducts in the eye was a marked advance on those of his predecessors and he also gave a detailed account of the ethmoid bone and its cells in the nose.

When the lacrimal ducts grow in- flamed during infection, tear outflow is cut down, and we notice the lack of the duct action easily enough since watering eyes make up one of the unpleasant symptoms of a cold.

Two canaliculi of tiny diameter are present in the inner corner of the eyelid, also called the lacrimal ducts; their openings can be seen with the naked eye within the lacrymal sacs when the eyelids are everted.

From the nasal cavity its continuity with the conjunctiva may be traced, through the nasolacrimal and lacrimal ducts; and with the frontal, ethmoidal, sphenoidal, and maxillary sinuses, through the several openings in the meatuses.

DKC can be characterized by cutaneous pigmentation, premature graying, dystrophy of the nails, leukoplakia of the oral mucosa, continuous lacrimation due to atresia of the lacrimal ducts, often thrombocytopenia, anemia, testicular atrophy in the male carriers, and predisposition to cancer.

The lacrimal canaliculi, also known as the lacrimal canals or lacrimal ducts, are the small channels in each eyelid that commence at minute orifices, termed puncta lacrimalia, on the summits of the papillae lacrimales, seen on the margins of the lids at the lateral extremity of the lacus lacrimalis.