Allergic Conjuctivitis.  What is Allergic Conjuctivitis? It is inflammation of conjunctiva  due to allergic or hypersensitivity reactions which may be immediate or delayed What Causes Allergy Eyes?Any allergens are in the air, where they come in contact with your eyes and nose. Airborne allergens include pollen, mold, dust.

What are the signs of allergies?
Common signs of allergies include:
In Eyes: Itching, Redness, Tearing or Swollen
Other:

• Runny nose
• Sneezing
• Coughing
• Difficulty breathing
• Itchy nose, mouth or throat
• Headache from sinus congestion

What is the treatment?
The most common treatment is to avoid what is causing your allergy. Itchy eyes? Keep your home free of pet dander and dust, and stay inside with the air conditioner on when there's a lot of pollen in the air. Air conditioners filter out allergens.
BEFORE TAKING ANY MEDICATION CONSULT YOUR DOCTOR

• Eyedrops are available as simple eye washes, or they may have one or more active ingredients such as     antihistamines, decongestants or mast cell stabilizers.
• Antihistamines relieve many symptoms caused by airborne allergens, such as itchy, watery eyes, runny     nose and sneezing.
• Decongestants clear up redness and nasal congestion.
• Mast cell stabilizers are similar to antihistamines, but while antihistamines are known for their immediate   relief, mast cell stabilizers are known for their long-lasting relief.