Understanding Dry Eye Syndrome

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Dry eye syndrome is caused by a chronic lack of sufficient lubrication and moisture on the surface of the eye. Symptoms of dry eyes range from constant eye irritation to significant inflammation and even scarring of the front surface of the eye. Dry eyes can become red and irritated, causing a feeling of scratchiness. Dry eye syndrome is a  very common problem, and dry eye syndrome is a major reason for visits to the eye doctor.

Dry Eye Symptoms

Symptoms of dry eyes and dry eye syndrome include:

  • Burning sensation
  • Itchy eyes
  • Aching sensations
  • Heavy eyes
  • Fatigued eyes
  • Sore eyes
  • Dryness sensation
  • Red eyes
  • Photophobia (light sensitivity)
  • Blurred vision

Another common symptom is something called a foreign body sensation — the feeling that some other object or material is “in” your eye.

signs of dry eye

And as odd as it may sound, watery eyes also can be a symptom of dry eye syndrome. This is because dryness on the eye’s surface sometimes will over-stimulate production of the watery component of your tears as a protective mechanism. But this “reflex tearing” does not stay in the eye long enough to correct the underlying dry eye condition.

In addition to these symptoms, dry eyes can cause inflammation and (sometimes permanent) damage to the surface of the eye.

Dry eye syndrome also can affect the outcomes of LASIK and cataract surgery.

What Causes Dry Eye Syndrome?

An adequate and consistent layer of tears on the surface of the eye is essential to keep your eyes healthy, comfortable and seeing well. Tears bathe the eye’s surface to keep it moist and wash away dust, debris, and microorganisms that could damage the cornea and lead to an eye infection.

A normal tear film consists of three important components. Each component of the tear film serves a critical purpose. Each tear component is produced by different glands on or near the eye. A problem with any of these sources of tear film components can result in tear instability and dry eyes, and there are different categories of dry eyes, depending on which component is affected.

The specific type of dry eye often will determine the type of treatment your eye doctor recommends to give you relief from your dry eye symptoms.

Factors Associated With Dry Eye Syndrome

causes of dry eye

A number of factors can increase your risk of dry eyes. These include:

  • Computer use. When working at a computer or using a smartphone or other portable digital device, we tend to blink our eyes less fully and less frequently, which leads to greater tear evaporation and increased risk of dry eye symptoms.
  • Contact lens wear. Though it can be difficult to determine the exact extent that contact lens wear contributes to dry eye problems, dry eye discomfort is a primary reason why people discontinue contact lens wear.
  • Aging. Dry eye syndrome can occur at any age, but it becomes increasingly more common later in life, especially after age 50.
  • Menopause. Post-menopausal women are at greater risk of dry eyes than men of the same age.
  • Indoor environment. Air conditioning, ceiling fans, and forced air heating systems all can decrease indoor humidity and/or hasten tear evaporation, causing dry eye symptoms.
  • Outdoor environment. Arid climates and dry or windy conditions increase dry eye risks.
  • Frequent flying. The air in the cabins of airplanes is extremely dry and can lead to dry eye problems, especially among frequent flyers.
  • Smoking. In addition to dry eyes, smoking has been linked to serious eye problems, including macular degeneration, cataracts, and uveitis.
  • Health conditions. Certain systemic diseases — such as diabetes, thyroid-associated diseases, lupus, rheumatoid arthritis and Sjogren’s syndrome — contribute to dry eye problems.
  • Medications. Many prescription and nonprescription medicines — including antihistamines, antidepressants, certain blood pressure medications and birth control pills — increase the risk of dry eye symptoms.
  • Eyelid problems. Incomplete closure of the eyelids when blinking or which can be caused by aging or occur after cosmetic blepharoplasty or other causes — can cause severe dry eyes that can lead to a corneal ulcer if left untreated.

Also, LASIK and other corneal refractive surgery can sometimes cause dry eyes. In most cases, however, dry eye discomfort after LASIK is temporary and resolves within a few weeks of the procedure.

If you have dry eyes prior to LASIK, your eye doctor may recommend a dry eye treatment regimen before your procedure to ensure the best possible LASIK results.

Dry Eye Tests

The only way to know for sure if you’ve got chronic dry eye syndrome is to have your eye doctor perform one or more dry eye tests during an eye exam.

Symptoms alone are poor predictors of the presence and severity of dry eye disease. Symptoms can vary significantly from person to person, and may even be affected by personality type. Some people with only minimal or mild dry eyes may feel their eyes are very bothersome, while others may have significant dry eye problems and not consider their symptoms significant enough to see an eye doctor (or they may not experience dry eye symptoms at all).

Only a careful examination of your eyes by an optometrist or ophthalmologist can reveal the presence and severity of dry eye syndrome and help your eye doctor determine the best type of dry eye treatment to keep your eyes healthy, comfortable and see well.

Dry Eye Treatment And Prevention

Thankfully, there are effective treatment options if you suffer from a chronic dry eye. In many cases, routine use of artificial tears and minor behavioral modifications (taking frequent breaks during computer use, for example) can significantly reduce dry eye symptoms.

steps to manage dry eye

In other cases, your eye doctor might recommend prescription eye medications and in-office procedures to help your body create and secrete more tears and to decrease eye irritation and inflammation.

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1 Comment for “Understanding Dry Eye Syndrome”

says:

Very interesting article! Dry eye syndrome is common eye problem. A warm compress is also work wonderfully to get rid of this eye problem. I was suffering from dry eyes and my eye doctor says I should apply a warm compress to my eyes twice a day. I got relief for this problem after applying warm compress.

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