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Exophthalmos (also called exophthalmus, exophthalmia, proptosis, or exorbitism) is a bulging of the eye anteriorly out of the orbit. Exophthalmos can be either bilateral (as is often seen in Graves' disease) or unilateral (as is often seen in an orbital tumor). Complete or partial dislocation from the orbit is also possible from trauma or ...
Boston's sign is the spasmodic lowering of the upper eyelid on downward rotation of the eye, indicating exophthalmic goiter. [1]Similar to von Graefe's sign, it is observed in people with Graves-Basedow disease, a type of hyperthyroidism.
Stellwag's sign is a sign of infrequent or incomplete blinking associated with exophthalmos or Graves orbitopathy. It is accompanied by Dalrymple's sign, which is a retraction of the upper eyelids resulting in an apparent widening of the palpebral opening. Stellwag's sign is named after Austrian ophthalmologist Karl Stellwag von Carion.
Differential diagnosis Graves disease Joffroy's sign is a clinical sign in which there is a lack of wrinkling of the forehead when a patient looks up with the head bent forwards. [ 1 ]
In approximately 20% of ophthalmopathy patients, ophthalmopathy appears before the onset of hyperthyroidism, in about 40% concurrently, and in about 20% in the six months after diagnosis. [22] In the remainder, the eye disease first becomes apparent after treatment of the hyperthyroidism, more often in patients treated with radioiodine. [23]
Differential diagnosis Graves-Basedow disease Abadie's sign of exophthalmic goiter is a medical sign characterized by spasm of the levator palpebrae superioris muscle with retraction of the upper lid (so that sclera is visible above cornea ) seen in Graves-Basedow disease which, together with exophthalmos causes the bulging eyes appearance.
Ocular ischemic syndrome is the constellation of ocular signs and symptoms secondary to severe, chronic arterial hypoperfusion to the eye. [1] Amaurosis fugax is a form of acute vision loss caused by reduced blood flow to the eye; it may be a warning sign of an impending stroke, as both stroke and retinal artery occlusion can be caused by thromboembolism due to atherosclerosis elsewhere in the ...
The main goal of treating optic gliomas is to preserve vision for as long as possible. [5] The tumor's slow and self-limiting growth indicates that it is not immediately problematic in most benign cases, with long-term studies showing that people with optic glioma may still have stable functional vision without intervention.