Why are allergy medications contraindicated for people with glaucoma?
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Antihistamines and decongestants contained in many allergy medications can have many side effects, one of which is the dilation of the pupil.
In rare instances, this can cause an acute glaucoma attack in individuals whose anterior chamber angles are anatomically narrow (narrow-angle glaucoma or angle-closure glaucoma).
However, this is rare and the use of antihistamines is usually acceptable for those with glaucoma.
Read more about angle-closure glaucoma.
Last reviewed on August 23, 2012