Oral Antihistamines

• Histamine is a chemical responsible for allergy symptoms like sneezing, itchy eyes and congestion. Antihistamines work by blocking histamine from attaching to receptors in the body, thereby reducing symptoms. Types of antihistamines include the first- and second-generation groups, as well as over-the-counter and prescription varieties.
  
  Over-the-counter antihistamines are effective in treating allergy symptoms like itchy eyes and congestion. Some of these medications can cause severe drowsiness, however, so they may be a last resort among allergy sufferers. Fortunately, there are some nonsedating versions available as well. Prescription antihistamines can help treat the symptoms of eye allergies when over-the-counter versions are ineffective.
  
  

Eye Drops

• Like oral antihistamines, eye drops are available in both over-the-counter and prescription form. Over-the-counter versions generally contain an antihistamine, decongestant or combination of the two.
  
  For more severe or persistent symptoms, prescription drops may be needed. According to WebMd.com, most prescription eye drops contain an antihistamine or mast cell stabilizer to reduce histamine, while others contain a corticosteroid to reduce inflammation.
  
  

Herbal Remedies

• The herb eyebright is among the most popular natural options for treating eye conditions of all kinds. According to Holistic.com, eyebright has anti-microbial and astringent properties and is highly valued among herbalists for its healing effects on the eyes. It can be used as a rinse or taken internally for its anti-allergenic effects.
  
  Nettle, another popular allergy remedy, works especially well when combined with eyebright. According to BeyondAllergy.com, the symptoms most effectively treated with nettle are itchy eyes and sneezing. The anti-inflammatory properties of nettle are likely responsible for its effects on allergies, according to Diagnose-Me.com.
  
  

Lifestyle Approaches

• The best method of eye allergy treatment is prevention. Because the bedroom is where people spend most of their time, it should be kept as allergen-free as possible. Vacuum carpets once a week, use dust covers on pillows, and keep pets out of the bedroom to keep your sleeping area free of pet dander. Dust once weekly using a wet rag and avoid dry-dusting, as this can stir up allergens.
  
  Staying indoors from 5:00 a.m. to 10:00 a.m. when pollen levels are highest can help prevent acute allergy attacks, as can taking an oral antihistamine 45 minutes before heading outdoors. Food allergies are capable of contributing to overall symptoms, so consider getting tested for food allergies and sensitivities, especially if other preventive measures have failed.