What are the Causes of Dry Eyes?

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The causes of dry eyes can be divided into:

1- Deficiency of tear film production.

2- Evaporative Dry Eye

1- Deficiency of Tear Film Production

Sjogrens disease or syndrome can be either primary or secondary sjogren syndrome... More information about Sjogrens Disease

The second category of tear film deficiency is non-sjogrens syndrome which can be divided into:

1- Age related which is the most common cause and mainly it occur after the age of 50 especially in female after menopause due to hormonal changes.

2- Destruction to lacrimal gland like in infiltrative process or in infectious process, after surgical removal or after radiation of head and neck. Infiltrative process as in sarcoidosis, lymphoma or amyloidosis.Infectious process as in trachoma

3- Obstruction to lacrimal gland ducts which can occur after infection, conjunctival scarring which can occur following trachoma and cicatricial pemphigoid

4- Neurological lesions with decrease sensation of the cornea like Parkinson disease, multiple sclerosis, Bells palsy and Alzheimer disease

5- Lasik and dry eye... For more information, Click here

6- Xerophthalmia or Vitamin A deficiency which leads to loss of goblet cells and deficiency in mucin layer.

7- Medications.

There are many medications that can cause dry eye and these are some of them:

• Diuretics which are used commonly to treat high blood pressure

• Angiotensin-converting enzyme (ACE) inhibitors which is used to treat high blood pressure.

• Antihistamines and decongestants.

• Sleeping pills.

• Birth control pills.

• Antidepressants.

• Isotretinoin drugs which is used for treatment of acneYou should write down all medications that you have when you visit your doctor.

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