Von Graefe's sign
Von Graefe's sign (lid lag sign) is the immobility or lagging of the upper eyelid on downward rotation of the eye, indicating exophthalmic goiter (Graves' Disease).[1]
A pseudo Graefe's sign (pseudo lid lag) shows a similar lag, but is due to aberrant regeneration of fibres of the oculomotor nerve (III) into the elevator of the upper lid.[2] It occurs in paramyotonia congenita.[3] A pseudo Graefe's sign is most commonly manifested in just one eye but can occasionally be observed in both. The reason why only one eye is affected is not yet clear.
See also
- Albrecht von Gräfe
- Boston's sign
- Griffith's sign
- Graves orbitopathy
- Hyperthyroidism, as lid lag may be in hyperthyroid patients lacking Graves' disease.
References
- ↑ Cline D; Hofstetter HW; Griffin JR. Dictionary of Visual Science. 4th ed. Butterworth-Heinemann, Boston 1997. ISBN 0-7506-9895-0
- ↑ Definition: pseudo-Graefe sign from Online Medical Dictionary
- ↑ Fowler, Timothy J.; John W. Scadding (2003). Clinical Neurology 3rd ed. p. 145. ISBN 0-340-80798-9.
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