• July is Dry Eye Awareness Month

    What is Dry Eye?

    Our eyes are always shedding tears. These tears are not caused by sadness or pain, they are made to create a “tear film.” The tear film protects the eyes and gives them moisture that is needed for clear and healthy vision. The tear film is made up of three layers:  fat-based oils, a thin watery fluid, and mucus.

    This combination normally keeps the surface of your eyes lubricated, smooth and clear. Dry eye disease is a common condition that occurs when your tears aren’t able to provide adequate lubrication for your eyes. Tears can be inadequate and unstable for many reasons. For example, dry eyes may occur if you don’t produce enough tears or if you produce poor-quality tears. This tear instability leads to inflammation and damage to the eye’s surface.

    Dry eyes feel uncomfortable. 

    If you have dry eyes, your eyes may sting or burn. You may experience dry eyes in certain situations, such as on an airplane, in an air-conditioned room, while riding a bike or after looking at a computer screen for a few hours. When this happens, blinking cannot create the moist “tear film” needed to protect and soothe the eye. The discomfort that results from dry eyes may affect how you see. In rare cases, dry eye can decrease your vision. Proper care and treatment can help relieve your symptoms of dry eye.

    What are the causes?

    Dry eye occurs when there is not enough tear film produced, the tear film is not draining properly from the eye, or the tear film is not the quality needed to maintain the health of the eye.

    Dry eye is common, with more than 16 million Americans having moderate to severe symptoms. Women are twice more likely to develop dry eye than men. Women who are pregnant, on certain types of birth control, hormone replacement therapy, or experiencing menopause are also more likely to have dry eye.

    Risk factors of dry eye include:

    •     Being more than 50 years old
    •     Hormonal changes
    •     Refractive surgery (for example, Lasik)
    •     Inflammation of the eyelids
    •     Environmental conditions, such as allergies, exposure to smoke, or a dry climate
    •     Contact lenses
    •     Certain medications (including those used to treat eye conditions such as glaucoma)
    •     Medical conditions such as Rheumatoid arthritis, Sjogren’s syndrome, and certain other autoimmune diseases

    Be sure to talk with your eye doctor to determine if there is an underlying cause of your dry eye. Your eye doctor will talk with you about your medical history, environmental risks, and medications. Your eye doctor will also examine your eye and assess the quality and quantity of the tears you produce.

    What are the symptoms?

    People with dry eye complain of:

    •     Burning or stinging
    •     Particles in the eye
    •     Gritty, sandy feeling
    •     Itchiness
    •     Redness and inflammation
    •     Stringy mucus
    •     Extreme sensitivity, especially to cigarette smoke
    •     Transient blurry vision
    •     Increased sensitivity to light

     Having these symptoms may mean that you have dry eye, but they may also be caused by other conditions. A thorough evaluation by your eye doctor is needed to determine the exact cause of these vision symptoms.

    What can you do to prevent dry eye symptoms?

    Use a humidifier: The use of a humidifier helps keep natural moisture in the air and can help with dry eye symptoms. A humidifier is helpful for dry rooms, such as those with air heaters or air conditioning.

    Avoid low humidity conditions (if possible):  Hair dryers, harsh winds and cigarette smoke should be avoided whenever possible. In addition, limit air conditioning, forced air heating, windy conditions, and in airplanes or cars when the heater or defroster is on.

    Take frequent screen breaks: When using a computer or other electronic device, it is important to remember to blink often and give the eyes frequent rests from staring at the screen (every 20 minutes).

    Drink water: Make sure you keep your body and your eyes hydrated by drinking water.

    Talk to your eye care professional: If your dry eye is related to an eye condition, such as contact lens wear or the chronic use of glaucoma eye drops, talk to your eye care professional about your options. You can also discuss with your eye care professional if taking vitamins or supplements can help with your symptoms of dry eye.

    Use of over-the-counter eyedrops and ointments: Any pharmacy carries over-the-counter tear film replacements called “artificial tears.” These eyedrops may replace the natural tear film of the eye and provide improved moisture. Artificial tears come in various brands that have different ingredients, including preservatives and preservative-free versions. Ointments can be used before bedtime to make sure your eyes stay lubricated during the night. Frequent use of these preparations, particularly those with preservatives, for long periods of time, may cause toxic irritation or even allergic reactions. Over-the-counter artificial tears solutions are not a treatment for dry eye, although they can lessen the symptoms.  It is important to talk with an eye care professional before using these or any other eye drops. It is important to take your eyedrops properly.

    Prescription medications: If you have a more serious case of dry eye, your eye doctor may suggest eye drop medication that will help your eyes make more tears.

    Tear duct plugs: Dry eye can occur when the eye drains too much tear film before it has the chance to provide moisture for the eye. To help keep tears in your eyes, your eye doctor can put plugs in your tear ducts that are located at the inner corners or your eye. These plugs can be removed if needed.

    Surgery: For some, dry eye is caused by your bottom eyelids being too loose. Your eye doctor may suggest surgery to tighten your eyelids to keep tears in your eyes.

    Dry eye is often misdiagnosed and can cause damage to the front of the eye. If you think that you may have dry eye you should visit an eye care professional for a full eye examination.

    Information from Mayoclinic.org and preventblindness.org 

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