Search results
Results from the WOW.Com Content Network
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).
An Exophthalmometer. An exophthalmometer is an instrument used for measuring the degree of forward displacement of the eye in exophthalmos.The device allows measurement of the forward distance of the lateral orbital rim to the front of the cornea. [1]
Protruding eyeballs (known as proptosis and exophthalmos). Diplopia (double vision) is common. [4] Limitation of eye movement (due to impairment of eye muscle function). Periorbital and conjunctival edema (accumulation of fluid beneath the skin around the eyes). In severe cases, the optic nerve may be compressed and acuity of vision impaired. [24]
In medical literature, Anglo-Irish surgeon Robert James Graves, in 1835, was the first to describe the association of a thyroid goitre with exophthalmos (proptosis) of the eye. [29] Graves' ophthalmopathy may occur before, with, or after the onset of overt thyroid disease and usually has a slow onset over many months. [citation needed]
Two signs are truly diagnostic of Graves' disease (i.e., not seen in other hyperthyroid conditions): exophthalmos and non-pitting edema (pretibial myxedema). Goiter is an enlarged thyroid gland and is of the diffuse type (i.e., spread throughout the gland).
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.
Exophthalmus was named for the first time by Carl Johan Schönherr in 1823 (column 1140). [4] It belongs in the tribe Eustylini. [1]In revising the Jamaican species, Vaurie offers an overview to the genus and its taxonomic conflicts. [5]
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. [1] It is named for Jean Marie Charles Abadie. [2] [3]