Many people confuse chalazia with styes, but these are two different eye problems. The main reason for this confusion is they both appear on the eyelids. Your glaucoma doctor can easily distinguish a chalazion from a stye. A chalazion appears as a large bump on the underside of the eyelid or behind the eyelashes. A stye, on the other hand, forms on the inner rim and tends to be smaller than a chalazion.
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