A member asked:

Do allergies usually affect one or both eyes?

3 doctors weighed in across 2 answers

Both: Allergic conjunctivitis is typically the result of airborne allergen impacting the eye and causing symptoms. B/c the allergen is airborne it will "hit" both eyes. It is distinctly unusual for one eye to be effected.

Answered 6/1/2016

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Both eyes: It is not easy to explain eye symptoms triggered by airborne substnaces affecting only one eye. Unless the exposure was brief and there was protection over the unafffected eye.

Answered 10/4/2016

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