What is NLDO in ophthalmology?

What is NLDO in ophthalmology?

Congenital Nasolacrimal Duct Obstruction (NLDO) – American Academy of Ophthalmology.

What is NLDO?

Nasolacrimal duct obstruction (NLDO) or dacryostenosis is the most common disorder of the lacrimal system.[1] Approximately 6% to 20% of newborns patients present with some symptoms.[2] Typically, NLDO presents more often in the first weeks or months of life with symptoms beginning when normal tear production occurs.

What is the function of the nasolacrimal duct?

The human nasolacrimal ducts consist of the upper and the lower lacrimal canaliculus, the lacrimal sac and the nasolacrimal duct. They drain the tear fluid from the ocular surface into the lower meatus of the nose.

What is a Dacryocystography?

Dacryocystography (DCG) is a diagnostic test for imaging the lacrimal apparatus. Contrast is injected into the lacrimal system, outlining the canaliculi and sac, and thereby identifying the site of obstruction.

What are three signs of Nasolacrimal?

Symptoms of nasolacrimal duct obstruction often affect only one eye and include:

• Constant and severe tearing.
• Painful swelling near the inside corner of the eye.
• Recurrent eye inflammation (conjunctivitis) or tear duct infections (dacryocystitis)
• Mucus or pus discharge from the lids and surface of the eye.
• Blurred vision.

How is NLDO diagnosed?

Diagnosis. NLDO can generally be diagnosed by history and physical examination. Reflux of mucinous discharge following palpation of the lacrimal sac is a diagnostic indicator for an NLDO. A dye disappearance test can also be conducted to diagnose NLDO [5].

What is the connection between eyes and nose?

Though sight and smell are two very different senses, the eye and nose are intimately connected by the nasolacrimal apparatus, the drainage system that carries tears from the ocular surface to the nose and ultimately to the gastrointestinal tract. The interconnected nature of the nasolacrimal system.

Which method is used for Dacryocystography?

dilate the punctum to insert the cannula. non-ionic iodinated contrast injection into a cannulated duct, avoiding air bubbles. acquire images, whilst ask the patient to look straight ahead to avoid blinking.

When is Dacryocystography used?

Dacryocystography is used to diagnose the condition causing problems with your tear duct. This is a minimally invasive procedure that is performed on an out-patient basis. You will receive an injection of contrast medium, which will allow the interventional radiologist to clearly visualise the lacrimal sac under X-ray.

Are nose and eyes connected?

How do you treat lacrimal duct blockage?

When obstruction is persistent, one or more of the following treatments may be recommended: tear duct massage, topical antibiotic eye drops, tear duct probing, balloon tear duct dilation, and tear duct intubation.