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Tearing Disorder

Where do tears come from and where do they go?

Tears are produced constantly by the lacrimal gland which is located under the upper eyelid. Tears are essential because they form a thin film that coats the front surface of the eye and prevents it from becoming dry. Normally, tears are quickly drained from the eye through a complex system of channels that lead from the inner corner of the eyelids into the nose. The system of channels is called the lacrimal drainage system.

What causes excessive tearing?

Any emotional stress or eye irritation will cause an overproduction of tears. Blockage of the lacrimal drainage system is an important cause of excessive tearing. This tends to occur in older people and the cause of the blockage is usually believed to be due to involutional changes of the nasolacrimal duct.

What are the symptoms?

You may experience “wet” eyes, which is particularly disturbing when reading or looking down. In more severe cases, tears might even roll down the cheeks. If the blockage is not resolved, stagnation of tears within the tear duct can lead to serious infection with mucopurulent discharge.

How do you tear a blocked lacrimal drainage system?

If you have an acute infection of the system, this must be treated with antibiotics. The next step is to determine the degree of obstruction and the site of blockage. This is simply done in the clinic by flushing the tear ducts with saline. Flushing the system might relieve the symptoms temporally, but they often recur after sometime. Surgery is necessary to treat those with severe obstruction of the tear ducts, or those with repeated infections of the system. The operation required is called Dacryocystorhinostomy (DCR), in which a new channel is created to allow tears to drain into the nose again. Specific operations depend on the site of obstruction.

Tearing in new born baby

A newborn baby may present with a “wet” eye usually at 1 to 2 weeks of age. Occasionally, there may be associated mucopurulent discharge. This is due to a membrane blocking the drainage system of tears into the nose. This blockage usually opens spontaneously within 4 to 6 weeks after birth. Massaging the inner corner of the eyelids may hasten the opening of the blockage. However, if the tearing persists despite the massage, flushing and probing of the drainage system can be done to perforate the membranous blockage. This is usually done when the child is less than one year of age. The flushing and probing can be repeated if the tearing persists. Persistent tearing despite all these measures would require surgical procedures to relieve the obstruction.
Tearing disorders may be due to irritation of the eye or disorder of the drainage system. This can be determined by paying a visit to an eye doctor who will perform simple tests to determined the cause.

Know More ‘The Final step’

Information given above provides only a preliminary introduction to Tearing Disorders. Finding out more about it is the next step towards visual independence. This is accomplished by calling Dr. Hardia Hospital for a consultation with doctor.