Abstract
Upper eyelid retraction is the most frequent sign of Graves Orbitopathy (GO). The eyelid retraction is defined by the resting position of the upper eyelid at or above the corneal limbus or when the lower eyelid resting position is situated below the corneal limbus. The eyelid retraction widens the palpebral fissure leading to a larger area exposure of the ocular bulb which can cause eye d…