lid lag

lid lag

The failure of the normal downward following movement of the upper lids on looking downward. Lid lag causes a strange staring appearance. It is a feature of undue protrusion of the eyes (EXOPHTHALMOS) and occurs in overactivity of the thyroid gland (THYROTOXICOSIS).
References in periodicals archive ?
Postoperative lid lag which was expected to occur as a result of lack of complete release of lid was found only in 08 patients.
Deficiency of striated muscle fibres, which causes inability of muscle to contract and relax so that elevation of lid to its normal level in primary gaze and relaxation restriction results in lid lag on looking down.
However, symptoms and signs that support hyperthyroidism include tremor, persistent tachycardia, weight loss and lid lag.
Specific signs in congenital ptosis are an absent lid crease, poor levator function, lid lag on downgaze and often associated superior rectus weakness.
There was no exopthalmos, lid lag, pretibial myxoedema or other signs of thyrotoxicosis.
Although clinical examination on ICU admission was negative for clinical signs consistent with a diagnosis of thyrotoxicosis (exophthalmos, lid lag, goitre), the presence of persistent tachycardia, together with occasional brief episodes of atrial fibrillation, prompted us to measure thyroid hormones as part of our diagnostic evaluation.
In addition to hair loss and a wide-eyed stare or proptotic appearance, physical findings may include localized myxedema (particularly pretibial), irritative keratoconjunctivitis, lid lag, diplopia, tachycardia, hyperactive reflexes, and smooth, warm, and velvety skin.
Eye lid lag and lid retraction can occur in any thyrotoxic state, but proptosis (bulging eye) is specific for Graves' disease.
All complications of blepharoptosis were noted in form of cosmetic appearance, under correction, lid fold, and bell's phenomenon, synkinetic movement, lid lag, lagophthalmos, lid notching, entropion, prolapsed of fornix, over correction, exposure keratitis, fat prolapse, sling exposure, granuloma and infection.
As cosmetic correction is not the priority in these cases, lid elevation is kept in minimum so that there is no corneal exposure and minimal lid lag.