In obstructive cases, dacryocystorhinostomy (endonasal or external) and Lester Jones tubes are the surgical options for nasolacrimal duct
and canalicular obstruction, respectively.
Neonatal respiratory distress: Sequela of bilateral nasolacrimal duct
The favoured aetiological theory, posited by Bruggeman in 1920, suggests an origin from the remnant of the embryonic nasolacrimal duct
, and is is supported by the fact that both the nasolacrimal duct
and nasolabial cysts are lined by the same pseudostratified columnar epithelium, and also by the fact that the cyst is located subjacent to the wing of the nose, in line with the naso-optic fissure.
Canalicular stenosis following probing for congenital nasolacrimal duct
Nasolabial cysts are found near the distal portion of the nasolacrimal duct
and its opening into the inferior nasal meatus.
An even less-common anomaly is cystic dilation of the lower end of the nasolacrimal duct
with intranasal extension.
It over-hangs and delineates the inferior meatus, which is anatomically significant only for the nasolacrimal duct
orifice that opens at the anterior end of the meatus.
The two most inferior ostia represent the openings of the nasolacrimal duct
and the eustachian tube.
The alternative, dacryocystoplasty, involves expansion of the nasolacrimal duct
with a balloon.
Orbital complications secondary to endoscopic sinus surgery include extraorbital muscle damage, nasolacrimal duct
or sac injury, optic nerve injury, and intraorbital hemorrhage or emphysema.
Regarding expansion of the medical and health care products business, Howard also stated, "We recently purchased from Chiron Vision Corporation the worldwide licensing and manufacturing rights to a semi-flexible balloon catheter used to clear obstructions in the nasolacrimal duct
Dacryocystitis is an infection of the lacrimal sac that is usually caused by obstruction of the nasolacrimal duct
The primary product is a sterile, single-use, semi-flexible balloon catheter used to clear obstructions in the nasolacrimal duct
which cause excessive tearing of the eye.
Other surgeries, such pterygium surgery, conjunctiva scar removal, nasolacrimal duct
The lacrimal apparatus consists of two canaliculi in the upper and lower eyelids that drain tears into the lacrimal sac and ultimately into the nose through the nasolacrimal duct