An abnormal bulging or protrusion of one or both eyeballs outward from the eye socket, often caused by thyroid disease or tumor.
From Greek 'exo-' (outside) and 'ophthalmos' (eye). This medical condition describes the eye literally protruding out of its socket, with the term coming directly from the Greek prefix meaning 'outside.'
Exophthalma from Graves' disease (a thyroid condition) is alarming to see—the immune system attacks the thyroid, which then causes inflammation and fat deposition behind the eyes, literally pushing them out of their sockets like a frightening biological metamorphosis.
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