What is a Dacryolith?
A dacryolith is a concretion within the lacrimal drainage system. Although it may cause intermittent epiphora without inflammation, dacryoliths are often underlying contributors to recurrent or chronic dacryocystitis. It may occur anywhere along the lacrimal drainage system, albeit most commonly in the lacrimal sac.
What is the meaning of expressible?
capable of being expressed
adjective. capable of being expressed. “an expressible emotion” Synonyms: describable. capable of being described.
What is the antonym of expressible?
Opposite of able to be expressed. inexpressible. indescribable. indefinable. unutterable.
Is Expressable a word?
Expressable definition Capable of being expressed.
What is pouting punctum?
The punctal orifice is swollen, red and turned outward (pouting punctum) in the involved eye. Tenderness may be found over the involved area. Pericanalicular inflammation characterized by edema of the canaliculus with conjunctivitis usually is seen.
Where does the lacrimal sac drain?
The puncta lead to small canals (canaliculi) that move tears to a sac to a reservoir on the side of the nose (lacrimal sac). From there tears travel down a duct (the nasolacrimal duct) and drain into your nose.
What is lacrimal canaliculitis?
Canaliculitis refers to an infection of the tubes that connect the eye to the lacrimal sac. The most common cause of canaliculitis is a bacterium called Actinomyces israelii, but other bacteria, fungi (eg, Candida albicans), and viruses (eg, herpes simplex) may be causative.
What is Canalicular obstruction?
Common canalicular obstruction typically results in the return of clear fluid from the opposite punctum. The return of the fluid along with some mucous through the other punctum signifies the presence of complete nasolacrimal duct (NLD) obstruction.
Where is the valve of hasner located?
nasolacrimal duct
The valve of Hasner, a mucosal flap at the distal end of the nasolacrimal duct, prevents air from entering the lacrimal sac when the nose is blown; the valve of Hasner is called the “membrane of Hasner” if it hasn’t opened. Tears are swallowed after they pass from the nose into the posterior pharynx.