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Allergies

Eye allergies, called allergic conjunctivitis, are a common condition that occurs when the eyes react to something that irritates them (called an allergen). The eyes produce a substance called histamine to fight off the allergen. As a result, the eyelids and conjunctiva — the thin, filmy membrane that covers the inside of your eyelids and the white part of your eye (sclera) — become red, swollen and itchy, with tearing and burning. Unlike bacterial or viral conjunctivitis, allergic conjunctivitis is not spread from person to person.

People who suffer from eye allergies usually (though not always) have nasal allergies as well, with an itchy, stuffy nose and sneezing. It is usually a temporary (acute) condition associated with seasonal allergies. However, in other cases, eye allergies can develop from exposure to other environmental triggers, such as pet dander, dust, smoke, perfumes, or even foods. If the exposure is ongoing, the allergies can be more severe, with significant burning and itching and even sensitivity to light.

The most common eye allergy symptoms include:

•   Red, swollen or itchy eyes

•   Burning or tearing of the eyes

•   Sensitivity to light

If accompanied by nasal allergies, you may also experience a stuffy, itchy nose and sneezing, as well as a headache, an itchy or sore throat or coughing.

Many eye allergies are caused by the body’s response to allergens in the air — both indoors and out — such as dust, pet dander, mold, or smoke. Some of the most common airborne allergens include pollen from grass, trees and ragweed, contributing to seasonal allergies.

Allergic reactions to perfume, cosmetics or drugs can also cause the eyes to have an allergic response. Some people may be allergic to the preservative chemicals in lubricating eyedrops. They should use preservative-free drops instead.

Sometimes, the eyes can react to other allergens that don’t necessarily come in direct contact with the eye, such as specific types of food or insect bites or stings.

At your visit, we will examine your eyes with a slit lamp microscope to check for signs of eye allergies, such as swollen blood vessels on the surface of the eye.  The doctors of Beach Eye Medical Group are experts in the ocular treatment of allergies.  We have two Cornea fellowship-trained staff members that have specialized in the treatment of corneal disease such as Allergies.

Treatment

Avoiding allergens

If pollen is an allergen for you, avoid going outdoors as much as possible when pollen counts are highest (generally mid-morning and early evening) and when wind blows pollens around. When you are outdoors, sunglasses or eyeglasses can help to prevent pollen from getting into your eyes.  To help minimize your exposure to pollen and other irritants while you are inside, keep your windows closed and use air conditioning — both in your car and home.  Don’t use window fans, as they draw the pollen and other allergens inside. Keep your air conditioning units clean so they won’t cycle allergens inside.

If mold is an allergy trigger for you, recognize that high humidity can cause molds to grow. Aim to keep the humidity level in your home around 30 to 50 percent. Clean high-humidity areas like basements, bathrooms and kitchens frequently, and consider using a dehumidifier in particularly humid or moist places (such as a basement).

If dust at home brings on your allergic conjunctivitis, try to cut down your exposure to dust mites, particularly in your bedroom. Use special allergen-reducing covers for your bedding — particularly your pillows — to keep dust mites away from your skin. Wash your bedding frequently, using hot water that is at least 130 degrees F. When cleaning your floors, instead of using a dry dust mop or broom, use a damp mop or rag to trap the allergens.

If pets are a source of allergies for you, try to keep animals outside of the house as much as possible. It is particularly important not to allow a pet into your bedroom so that you can sleep in an allergen-free room. Consider hardwood or tile floors instead of carpeting, which traps the pet dander. Always wash your hands after touching a pet, and wash clothing that has been exposed to pets. Finally, always avoid rubbing your eyes, which only irritates them more.

Treating eye allergies with eyedrops and medicine

Artificial tear drops can help relieve eye allergies temporarily by washing allergens from the eye. They also relieve dry, irritated eyes by adding moisture. These drops, available without a prescription, can be used as often as you need them.

Decongestants reduce redness in the eyes from allergies. They are available as over-the-counter eyedrops. They may be sold simply as a decongestant or as a decongestant with an antihistamine, which relieves eye itchiness. These types of eyedrops should not be used for more than two to three days, as longer-term use actually increases your irritating symptoms.

Oral antihistamines may be somewhat helpful in relieving itchy eyes; however, they can make eyes dry and even worsen eye allergy symptoms.

Eyedrops with both an antihistamine to relieve itchiness and a mast-cell stabilizer help prevent eye allergies. They are used twice a day to relieve itching, redness, tearing and burning.

Steroid eyedrops can help treat chronic and severe eye allergy symptoms such as itching, redness and swelling.

If symptoms are not controlled by allergen avoidance, eyedrops or medicine, immunotherapy (allergy shots) may be an option for relieving eye allergies. With immunotherapy, shots containing tiny amounts of the allergen are given, with the dose gradually increasing over time, to help your body become immune to the allergens.

The doctors at Beach Eye Medical Group can help determine which treatments are best for you.

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