dacryolith

dacryolith

 [dak´re-o-lith″]
a calculus in a tear duct.

dac·ry·o·lith

(dak'rē-ō-lith'),
A concretion in the lacrimal apparatus.
[dacryo- + G. lithos, stone]

dac·ry·o·lith

(dak'rē-ō-lith)
A concretion in the lacrimal apparatus.
Synonym(s): ophthalmolith, tear stone.
[dacryo- + G. lithos, stone]
References in periodicals archive ?
All patients underwent surgical treatment consisting of canaliculotomy and dacryolith removal.
Moreover, eyelashes can be washed out into the lower drainage system where they can cause tear stagnation and act as a nidus for dacryolith. (5)
These include infectious keratitis, pigmented conjunctival lesions and a rare case of canalicular obstruction caused by a mascara-laden dacryolith (15) or rheum (Figure 3).
Dacryoliths are known to be more common in primary acquired nasolacrimal duct obstruction (PANDO), and PANDO may be related to the early stages of dacryolith formation.
Chronic infection may also lead to formation of dacryoliths and subsequent obstructive signs and symptoms.
A monitor shows the images obtained through the little endoscope in the probe, while an irrigation cannula and a laser or microdrill for treating stenoses and dacryoliths (stones in the lacrimal sac) are available options.
(1) In the remaining 60% of patients, there appeared to be no obvious preoperative cause of obstruction; of these patients, 65% were found to have dacryoliths at surgery.
Advantages of Ext DCR are good intraoperative visibility inside the lacrimal sac allowing unrestricted inspection of the internal punctum and the lacrimal sac mucosa, the possibility of detecting lacrimal sac for pathology (tumours, dacryoliths) and ease of suturing mucosal flaps.
Actinomyces species were most commonly isolated (75%) and dacryoliths were present in six of the cases.
The insufficient drainage is due to either congenital causes like punctal atresia, diverticulum or fistula from sac to nose or cheek, Nasolacrimal Duct Obstruction (NLD), agenesis or acquired causes (1) like punctal stenosis due to age-related atrophic processes, chronic disease, dacryoliths, allergy, systemic chemotherapeutic agents, postherpetic infection (Herpes simplex, varicella zoster), bacterial infection (Actinomyces, Chlamydia), Wegener granulomatosis, sarcoidosis, hay fever, atopy, etc.
It maybe inflammatory or noninflammatory, neoplastic, foreign bodies, dacryoliths, infective (bacterial, viral and fungal), noninfective (atonic), acute or chronic form.
Mechanical lacrimal drainage obstructions may be due to intraluminal foreign bodies, such as dacryoliths or casts.