Keywords: allergic conjunctivitis
AbstractThe conjunctiva is a membrane that lines the eyelid and covers the white of the eye. It contains a large number of cells from the immune system (mast cells) that release chemical substances or mediators (e.g. histamine) in response to a variety of stimuli (such as pollens, mould spores, or dust mites).1-6 The release of these mediators causes the blood vessels in the conjunctiva to become swollen or inflamed.4
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