blepharospasm


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blepharospasm

 [blef´ah-ro-spaz″m]
spasm of the orbicular muscle of the eyelid.

bleph·a·ro·spasm

, blepharospasmus (blef'ă-rō-spazm', -spaz'mŭs),
Involuntary spasmodic contraction of the orbicularis oculi muscle; may occur in isolation or be associated with other dystonic contractions of facial, jaw, or neck muscles; usually initiated or aggravated by emotion, fatigue, or drugs.

blepharospasm

(blĕf′ə-rō-spăz′əm)
n.
Spasmodic winking caused by the involuntary contraction of an eyelid muscle.

blepharospasm

[blef′ərōspaz′əm]
Etymology: Gk, blepharon, eyelid, spasmos, spasm
the involuntary contraction of eyelid muscles. The condition may be caused by a local lesion of the eye, a neurological irritation, or psychological stress.

blepharospasm

A focal dystonia consisting of involuntary twitching of one or both eyelids; the spasms may completely close the eyelids which, with time, causes functional blindness even if the vision is normal.
 
Clinical findings
Blinking or spasms of the eyelids, dry eyes, photosensitivity.

Aetiology
Emotional stress, sleep deprivation or use of stimulants—e.g., amphetamines, caffeine, nicotine, decongestants.

Management
Botulinum toxin (Botox), surgery (protractor myomectory), dark glasses for photosensitivity.

blepharospasm

Neurology A focal dystonia consisting of the involuntary twitching of one or both eyelids; the spasms may completely close the eyelids, causing functional blindness even if the vision is normal Etiology Related to emotional stress, sleep deprivation or use of stimulants–eg, amphetamines, caffeine, nicotine, decongestants

bleph·a·ro·spasm

, blepharospasmus (blef'ă-rō-spazm, -spaz'mŭs)
Involuntary spasmodic contraction of the orbicularis oculi muscle.

blepharospasm

Uncontrollable winking or sustained tight closure of the eyes caused by involuntary contraction of the flat eyelid muscle under the skin. Blepharospasm may result from a sharp foreign body in the eye or a corneal ulcer, but also occurs as a psychologically induced TIC. Botulinum toxin has been found useful in this condition.

blepharospasm 

Tonic or chronic spasm of the orbicularis oculi muscle which involves involuntary closure of the eyelids. It is often provoked by a foreign body in the eye, an abrasion or inflammation of the cornea or conjunctiva, or by excessive exposure to ultraviolet light (e.g. actinic keratoconjunctivitis). Treatment consists chiefly of injection into the muscles around the eyelids of botulinum toxin. See botulinum toxin; chemodenervation; actinic keratoconjunctivitis; orbicularis muscle.

bleph·a·ro·spasm

, blepharospasmus (blef'ă-rō-spazm, -spaz'mŭs)
Involuntary spasmodic contraction of the orbicularis oculi muscle; may occur in isolation or be associated with other dystonic contractions of facial, jaw, or neck muscles.

blepharospasm

spasm of the orbicularis oculi muscle of the eyelid.

Patient discussion about blepharospasm

Q. eyelids what causes your eye lids too twitch? my left eye lid has been twitching on and off for about a week what causes it and how can i get it to stop.

A. Not an answer, just another question - how long can this go on? My eyelid has been twitching, (likely lack of sleep) for almost a month now. Any treatment that I should seek?

More discussions about blepharospasm
References in periodicals archive ?
Epidemiological studies report that dry eye, which is present in almost all blepharospasm patients, is also more common in female population, especially postmenopausal (24) and elderly (25-28) women.
She was diagnosed with essential blepharospasm and started on trihexyphenidyl 6 milligrams per day.
LN hyperechogenicity was observed in 73% (22/30) of patients with cervical dystonia, a prevalence higher than that of patients with blepharospasm (33%, 10/30, P = 0.
Reduced control of light entering eye Blepharospasm Involuntary blinking, Imbalance of blink reflex squeezing or closure of eyelids Buphthalmos Epiphora, blepharospasm Multiple causes enlarged cornea Coloboma Variable, vision normal Reduction in control of to poor light entering eye Stimulation of trigeminal nerve Corneal Pain, foreign-body Direct irritation of abrasion sensation, reflex tears trigeminal afferents Corneal ulcer Pain, tearing, poor Direct irritation of vision, red eye trigeminal afferents Corneal Low vision, pain, Deposition of lipids in dystrophy hyperaemia cornea.
KEY WORDS: Benign essential blepharospasm botulinum toxin facial dystonia orbicularis oculi.
The role of botulinum toxin Type A in the management of blepharospasm and hemifacial spasm.
If the twitching involves both eyes, it is possible the sufferer has blepharospasm, a chronic condition which can develop into repeated forceful closing of the eyelids.
BOTOX(R) has already received approval for other indications such as Blepharospasm, Cervical Dystonia, Hemifacial Spasm and associated Focal Dystonias, for the treatment of Focal Spasticity as seen in ambulant pediatric cerebral palsy patients two years of age or older and in adult post stroke patients.
In 2006, she was diagnosed with a rare condition called blepharospasm, an involuntary contraction of one of the muscles that controls the eyelids, causing them to close.
Animals with corneal ulcers present clinical signs of epiphora, pawing, blepharospasm, photophobia, and corneal opacity [10].
BoNT is the first bacterial toxin licensed by USFDA as 'occulinum' a drug for the treatment of blepharospasm in 1989.