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Encyclopedia > Duane syndrome
Duane syndrome
Classification & external resources
An individual diagnosed with Duane syndrome in the left eye. In this image, the affected person is attempting to look far right. Notice the afflicted left eye faces straight and up (an "upshoot"), rather than following the right eye to the right.
ICD-10 H50.8
ICD-9 378.71
OMIM 126800 604356
DiseasesDB 30810
eMedicine oph/326 
MeSH D004370

Duane syndrome (DS) is a rare, congenital eye movement disorder most commonly characterized by the inability of the eye to turn out. The syndrome was first described by Stilling (1887) and Turk (1896), and subsequently named for Alexander Duane who discussed the disorder in more detail in 1905[1] Image File history File linksMetadata Duane_syndrome. ... The International Statistical Classification of Diseases and Related Health Problems (most commonly known by the abbreviation ICD) provides codes to classify diseases and a wide variety of signs, symptoms, abnormal findings, complaints, social circumstances and external causes of injury or disease. ... The International Statistical Classification of Diseases and Related Health Problems 10th Revision (ICD-10) is a coding of diseases and signs, symptoms, abnormal findings, complaints, social circumstances and external causes of injury or diseases, as classified by the World Health Organization (WHO). ... // H00-H59 - Diseases of the eye and adnexa (H00-H06) Disorders of eyelid, lacrimal system and orbit (H00) Hordeolum and chalazion (H000) Hordeolum and other deep inflammation of eyelid (H001) Chalazion (H01) Other inflammation of eyelid (H010) Blepharitis (H011) Noninfectious dermatoses of eyelid (H02) Other disorders of eyelid (H020) Entropion... The International Statistical Classification of Diseases and Related Health Problems (most commonly known by the abbreviation ICD) provides codes to classify diseases and a wide variety of signs, symptoms, abnormal findings, complaints, social circumstances and external causes of injury or disease. ... The following is a list of codes for International Statistical Classification of Diseases and Related Health Problems. ... The Mendelian Inheritance in Man project is a database that catalogues all the known diseases with a genetic component, and - when possible - links them to the relevant genes in the human genome. ... The Disease Bold textDatabase is a free website that provides information about the relationships between medical conditions, symptoms, and medications. ... eMedicine is an online clinical medical knowledge base that was founded in 1996. ... Medical Subject Headings (MeSH) is a huge controlled vocabulary (or metadata system) for the purpose of indexing journal articles and books in the life sciences. ... A congenital disorder is a medical condition or defect that is present at or before birth (for example, congenital heart disease). ... An eye is an organ that detects light. ... This article is about the medical term. ... For other uses, see Eye (disambiguation). ... Alexander Duane (September 1, 1858 - June 10, 1926) was an American ophthalmologist who was a native of Malone, New York. ... For other uses, see 1905 (disambiguation). ...


Other names for this condition include: Duane's Retraction Syndrome (or DR syndrome), Eye Retraction Syndrome, Retraction Syndrome, Congenital retraction syndrome and Stilling-Turk-Duane Syndrome.[2]

Contents

Characteristics

As described by Duane, the characteristic features of the syndrome are:
1. Limitation of abduction (outward movement) of the affected eye.
2. Less marked limitation of adduction (inward movement) of the same eye.
3. Retraction of the eyeball into the socket on adduction, with associated narrowing of the palpebral fissure (eye opening)
4. Widening of the palpebral fissure on attempted abduction. (N.B. Mein and Trimble [3] point out that this is "probably of no significance" as the phenomenon also occurs in other conditions in which abduction is limited).
5. Poor convergence
6. A face turn to the side of the affected eye to compensate for the movement limitations of the eye(s) and to maintain binocular vision. For other uses, see Eye (disambiguation). ... A socket generally designates a cavity or region used for fitting and connecting some specific device. ... Binocular vision is vision in which both eyes are used synchronously to produce a single image. ...



In addition to the above, other characteristics may or may not be present, and these include:
1. Elevation or 'upshoot' of the affected eye on adduction. More rarely 'down shoots' can also occur.
2. Head movements to compensate for loss of eye movement when attempting to view an object outside of binocular viewing range (which may be very narrow).
3. Absence of diplopia: Few patients with the syndrome complain of diplopia when their eyes are misaligned. Diplopia, commonly known as double vision, is the perception of two images from a single object. ...


In about 80 per cent of cases, only one eye is affected, most often the left. However, in some cases, both eyes are affected, with one eye usually more affected than the other.


Causes

DS is a miswiring of the eye muscles, causing some eye muscles to contract when they shouldn't and other eye muscles not to contract when they should.[2] For other uses of Muscles, see Muscles (disambiguation). ...


Alexandrakis G & Saunders RA [4] state that:

In most cases, the abducens nucleus and nerve are absent or hypoplastic, and the lateral rectus muscle is innervated by a branch of the oculomotor nerve. However, there may be contributing mechanical abnormalities

This view is supported by the earlier work of Hotchkiss et al[5] who reported on the autopsy findings of two patients with Duanes syndrome. In both cases the sixth cranial nerve nucleus was absent, as was the sixth nerve, and the lateral rectus muscle was innervated by the inferior division of the third or oculomotor cranial nerve. This misdirection of nerve fibres results in opposing muscles being innervated by the same nerve. Thus, on attempted abduction, stimulation of the lateral rectus via the oculomotor nerve will be accompanied by stimulation of the opposing medial rectus via the same nerve; a muscle which works to adduct the eye. Thus, co-contraction of the muscles takes place, limiting the amount of movement achievable and also resulting in retraction of the eye into the socket. The oculomotor nerve () is the third of twelve paired cranial nerves. ...


The mechanical factors noted by Miller and Clark above are generally regarded as arising secondary to loss of innervation. During corrective surgery fibrous attachments have been found connecting the horizontal recti and the orbital walls and fibrosis of the lateral rectus has been confirmed by biopsy. This fibrosis can result in the lateral rectus being 'tight' and acting as a tether or leash. Co-contraction of the medial and lateral recti allows the globe to slip up or down under the tight lateral rectus producing the up and down shoots characteristic of the condition.


Epidemiology

Most patients are diagnosed by the age of 10 years and DS is more common in girls (60 percent of the cases) than boys (40 percent of the cases). A recent french study [6] reports the following findings:

The incidence of this syndrome in the population of strabismic patients was 1.9%. The number of women affected was 83 (53.5%). The syndrome was unilateral in 121 cases (78.1%). The left eye (71.9%) was affected more frequently than the right.

Around 10-20% of cases are familial; these are more likely to be bilateral than non-familial Duane syndrome. Duane syndrome has no particular race predilection. While usually isolated to the eye abnormalities, Duane syndrome can be associated with extraocular problems (so-called "Duane's Plus"), including cervical spine abnormalities (Klippel-Feil syndrome), Goldenhar syndrome, autism, heterochromia,and thalidomide-induced embryopathy. A family of Ouagadougou, Burkina Faso in 1997 A family consists of a domestic group of people (or a number of domestic groups), typically affiliated by birth or marriage, or by comparable legal relationships — including domestic partnership, adoption, surname and (in some cases) ownership (as occurred in the Roman Empire). ... Klippel-Feil syndrome is a rare disorder characterized by the congenital fusion of any 2 of the 7 cervical (neck) vertebrae. ... Goldenhar syndrome (also known as Oculo-Auriculo-Vertebral/OAV syndrome) - sometimes used interchangeably with Hemifacial Microsomia (although this definition is usually reserved for cases without internal organ/verterbrae disruption) - is a congenital defect documented in 1952 by Maurice Goldenhar and affecting between 1/3500 to 1/26000 live births in... Autism is a brain development disorder characterized by impairments in social interaction and communication, and restricted and repetitive behavior, all exhibited before a child is three years old. ... For the tightly packed form of DNA, see Heterochromatin. ... This article is about the drug. ...

Treatment

Duane syndrome cannot be cured, as the "missing" cranial nerve cannot be replaced. Treatment, therefore, is properly directed toward: correcting refractive errors, normalizing head position, expanding field of binocularity, and minimizing up- and downshoots. Strabismus surgery is often helpful; occasionally this is not needed during childhood, but becomes appropriate later in life, as the head position changes (presumably due to progressive muscle contracture). Cranial nerves are nerves which start directly from the brainstem instead of the spinal cord. ... // A refractive error, or refraction error, is an error in the focusing of light by the eye and a frequent reason for reduced visual acuity. ... This article or section does not cite its references or sources. ... Isolating the inferior rectus muscle Disinserting the medial rectus muscle Strabismus surgery is surgery on the extraocular muscles to correct the misalignment of the eyes. ... Contracture can refer to: Dupuytrens contracture Volkmanns contracture Capsular contracture This is a disambiguation page: a list of articles associated with the same title. ...


Prominent down- or upshoots (such as that pictured above) may be treated with a special form of muscle surgery, a "Y-splitting" procedure, often combined with a recession. In macroeconomics, a Recession is a decline in any countrys Gross Domestic Product (GDP), or negative real economic growth, for two or more successive quarters of a year. ...


Vertical Rectus Transposition sugery has achieved increased lateral motility in many cases. The VRT realigned muscles work with the good medial muscle to provide a "tripod" of musculature for the eye; the newly moved muscles provide torque and tension against the medial muscle, which is what allows for the central alignment. And, because they are "working" muscles, they also may allow for some range of movement (lateral) in their new position. Dr. Arthur Rosenbaum at UCLA is a leading practitioner of this technique.


References

  1. ^ Duane, A. Congenital Deficiency of Abduction associated with impairment of adduction, retraction movements, contraction of the palpebral fissure and oblique movements of the eye. Archives of ophthalmology (Chicago) 1905 34, 133-50
  2. ^ a b genome.gov. Retrieved on 2007-06-06.
  3. ^ Mein, J. & Trimble, R. Diagnosis and management of ocular motility disorders. 2nd ed. Blackwells 1991
  4. ^ Duane retraction syndrome. Ophthalmol Clin North Am. 2001 Sep;14(3):407-17
  5. ^ Hotchkiss M.G., Miller N.R., Clark, A.W., & Green W. R., (1980) Bilateral Duane's retraction syndrome. A clinico-pathologic case report. Arch of Ophthalmology 98, 870-4
  6. ^ Mehel E, Quére MA, Lavenant F, Pechereau A. Epidemiological and clinical aspects of Stilling-Turk-Duane syndrome. J Fr Ophtalmol. 1996;19(8-9):533-42.

Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era in the 21st century. ... is the 157th day of the year (158th in leap years) in the Gregorian calendar. ...

External links

  • Duanes Syndrome Support and Discussion Group
  • Animation at mrcophth.com
  • SEE-KID: Computer-assisted Simulation and Treatment of Eye Motility Disorders

  Results from FactBites:
 
eMedicine - Duane Syndrome : Article by Arun Verma, MD (7501 words)
Duane syndrome (DS) is a rare, congenital disorder of eye movement.
In 1976, Duane and coauthors described entirely unrelated pseudo-DS in which abduction is restricted and narrowing of the palpebral fissure and retraction of the globe occur after fracture of the medial orbital wall with entrapment of the medial rectus muscle.
Duane A: Congenital deficiency of abduction, associated with impairment of adduction, retraction movements, contraction of the palpebral fissure and oblique movements of the eye.
  More results at FactBites »


 
 

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