Disease or Syndrome
exophthalmos Audio
ex·oph·thal·mos [ ek-sof-thal-muh s, -mos ]
Subclass of:
orbit (eye disorders)
Etymology:
Greek exo = out + ophthalmos = eye
Denotes an outward protrusion of the eyeball from the orbit, the degree of which may be measured with an exphthalmometer (Greek metron = measure).
Also called:
Proptosis
Definitions related to exophthalmos:
  • (proptosis) Abnormal protrusion of one or both eyes from the socket; causes include hyperthyroidism (particularly Graves disease); bleeding behind the eye; infection, inflammation, or tumors of the orbit; and vascular disorders.
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
  • (proptosis) An eye that is protruding anterior to the plane of the face to a greater extent than is typical.
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2021
  • A protrusion or bulging of the eye that occurs with Graves' eye disease. Tissues behind the eye swell, forcing the eyeball forward. Also called proptosis.
    Harvard Dictionary of Health Terms
    Harvard Medical Publishing, 2011
  • Abnormal protrusion of both eyes; may be caused by endocrine gland malfunction, malignancy, injury, or paralysis of the extrinsic muscles of the eye.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2021
  • Protrusion of one or both eyeballs; can be congenital and familial, or due to pathology, such as a retroorbital tumor (usually unilateral) or thyroid disease (usually bilateral).
    CRISP Thesaurus
    National Institutes of Health, 2006
  • The anterior displacement of the eye within the orbit, giving a bulging appearance.
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
  • Proptosis is protrusion of the eyeball. Exophthalmos means the same thing, and this term is usually used when describing proptosis due to Graves disease. Disorders that may cause changes in the appearance of the face and eyes that resemble proptosis but are not include hyperthyroidism without infiltrative eye disease, Cushing disease,...
    Merck Manuals
    Merck & Co., Inc., 2020
  • Exophthalmos is defined in Dorland's Medical Dictionary as an
    Medscape
    WebMD, 2019
  • Exophthalmos, abnormal protrusion of one or both eyeballs. The most common cause for unilateral or bilateral exophthalmos is thyroid eye disease, or Graves ophthalmopathy. The proptosis arises from inflammation, cellular proliferation, and accumulation of fluid in the tissues that surround the...
    Encyclopedia Britannica
    Encyclopedia Britannica, Inc., 2020
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