Can allergies affect just one eye but not the other?

Posted by: Pepose Vision Institute in Allergies, Dry Eyes on April 15, 2016

The simple answer is no. Typical allergies such as hay fever, etc., are systemic and affect both eyes. It is possible that a small amount of allergen can get in one eye and cause a temporary problem, but this is highly unlikely. A red, swollen, tearing eye can be caused by tear duct obstruction, foreign body, exposed suture, ill-fitting contact lens, or small chalazion (stye).
Allergies are very common this time of year in our area.  If your eyes feel aggravated, please schedule an appointment. We have advanced technology to diagnose and treat most any eye issue due to allergies and/or dry eyes.

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