What percentage of the world has Marcus Gunn syndrome?

Approximately 50% of blepharoptosis cases are congenital. Incidence of Marcus Gunn jaw-winking syndrome among this population is approximately 5%.

What is Marcus Gunn jaw wink?

Marcus Gunn phenomenon is a rare condition characterized by movement of the upper eyelid in a rapid rising motion (a “wink”) each time the jaw moves. The wink phenomenon may be elicited by opening the mouth, thrusting the jaw to the side, jaw protrusion, chewing, smiling, or sucking.

What is jaw wink ptosis?

Marcus Gunn Jaw Winking Ptosis is a congenital ptosis associated with synkinetic movements of upper lid on masticating movements of the jaw. It is usually unilateral but rarely presents bilaterally. Affects males and females in equal proportion.

What is congenital ptosis?

Ptosis (eyelid drooping) in infants and children is when the upper eyelid is lower than it should be. This may occur in one or both eyes. Eyelid drooping that occurs at birth or within the first year is called congenital ptosis.

Can Marcus Gunn be cured?

Treatment is only necessary if there is an eye or vision problem, although some people choose to have the condition corrected for cosmetic reasons. Treatment for Marcus Gunn syndrome usually corrects the condition with no long-term problems.

Is there a cure for Marcus Gunn syndrome?

Treatment of Marcus Gunn phenomenon is usually not needed because the condition tends to grow less noticeable with age. Genetic counseling may be of benefit for patients and their families. Other related eye problems such as strabismus, amblyopia, etc., may be corrected with eyeglasses, surgery and/or drugs.

Can Marcus Gunn syndrome be cured?

What is Marin Amat syndrome?

Marin-Amat syndrome (or ‘inverse Marcus Gunn phenomenon’) is a rarely reported synkinesis in which one eyelid closes upon full opening of the jaw or movement of the jaw laterally.

Is ptosis a birth defect?

Ptosis can be caused by a congenital abnormality (present at birth), or it can develop later due to an injury or disease. Ptosis that is present at birth is called congenital ptosis. Although it is usually an isolated problem, a child with congenital ptosis may also have: eye movement abnormalities.

What are the features of Marcus Gunn jaw winking Syndrome?

Although Marcus Gunn jaw-winking syndrome is usually unilateral[12-13] it can present bilaterally in rare cases. The characteristic feature of the phenomenon is that the raising; and not winking of the affected eyelid is synchronous with and proportionate to the opening of the mouth. The wink

Is there a surgery for the Marcus Gunn phenomenon?

[1] Surgery for Marcus Gunn phenomenon may be considered for ptosis or jaw winking that is considered cosmetically significant, or causing amblyopia. Depending on the degree of ptosis and severity of jaw winking, several surgical techniques have been proposed. [11]

How does the Marcus Gunn Wink phenomenon occur?

The wink phenomenon may be elicited by opening the mouth, thrusting the jaw to the side, jaw protrusion, chewing, smiling, or sucking. It is usually present at birth and may occur with other eye abnormalities (such as strabismus) or vision problems. Although it usually affects one eye, it can affect both eyes in rare cases.

Can a person be born with Marcus Gunn syndrome?

Sometimes, people with Marcus Gunn phenomenon are also born with other birth defects. In these cases, a chromosome or gene mutation may be found. Since there are different causes of Marcus Gunn phenomenon and in most cases the cause is unknown, it is difficult to predict if it can be passed down in a family.