<unk>  is the lagging of the upper eyelid on downward rotation of the eye, indicating exophthalmic goiter (Graves' Disease). It is a dynamic sign, whereas lid lag is a static sign which may also be present in cicatricial eyelid retraction or congenital ptosis. A pseudo<unk> '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. It occurs in paramyotonia congenita. A pseudo<unk> 's sign is most commonly manifested in just one eye but can occasionally be observed in both. The reason only one eye is affected is not yet clear.
Von Graefe's sign
Claybrook sign
Thurstan Holland sign
Crichton-Browne sign
De Musset's sign
Bastian–Bruns sign
Ewart's sign
Rovsing's sign