What is Type 2 Duane syndrome?

Duane syndrome type 2: The ability to move the affected eye(s) inward toward the nose (adduction) is limited, whereas the ability to move the eye outward (abduction) is normal or only slightly limited.

What causes Duane’s Retraction syndrome?

What is the cause of Duane Syndrome? Duane syndrome is due to miswiring of nerves to the eye muscles. In Duane syndrome, the 6th cranial nerve that controls the lateral rectus muscle (the muscle that rotates the eye out towards the ear) does not develop properly. Why the nerve does not develop is not fully understood.

Is Duane retraction rare?

Frequency. Isolated Duane retraction syndrome affects an estimated 1 in 1,000 people worldwide. This condition accounts for 1 percent to 5 percent of all cases of abnormal eye alignment (strabismus). For unknown reasons, isolated Duane syndrome affects females more often than males.

What type of mutation causes Duane syndrome?

The diagnosis of Duane syndrome is based on clinical findings. Mutations in the CHN1 gene are associated with familial isolated Duane syndrome. Direct sequencing of the CHN1 gene is available as a clinical test, and has to date detected missense mutations in seven patients and affected family members.

Does Duane’s syndrome get worse?

Duane syndrome is present from birth. It does not get better nor does it get worse. It cannot be improved by surgery, although surgery does sometimes take place to deal with some aspects. Usually Duane syndrome affects just one eye, most often the left, although in some children it can affect both eyes.

Can surgery Fix Duane syndrome?

There’s no cure for Duane syndrome, but surgery can be used to try to improve or eliminate issues with head turns, reduce or completely remove considerable misalignment of the eyes, reduce severe retraction of the eyeball, and improve the tendency of the eye to deviate upward or downward with particular eye movements.

Is Duane syndrome serious?

DS doesn’t cause blindness and doesn’t usually lead to other health issues. In very rare cases, it has been linked to problems with bones, eyes, ears, kidneys, and the nervous system. Most of the time, only one eye is affected — usually the left one. But 20% of people have trouble with both eyes.

Does Duane syndrome get worse?

The condition remains stable (although it may not always be noticed immediately after birth) and will not get worse, but will not get better. It may be helpful to inform your child’s school teacher about their eye condition, if your child needs to turn their head to compensate.

Is Duane’s syndrome considered a disability?

3. The Social Security Administration (SSA) determined a period of disability began in December 1987 as a result of Duane’s syndrome.

What test will you use to detect Duane syndrome?

conducting a full medical exam and vision exam. measuring the degree of misalignment in the eyes. testing the range of movement of both eyes. determining whether an abnormal head turn is used in an attempt to see better.

What is Duane syndrome type one?

Duane syndrome (DS) is a rare eye disorder some people are born with. The muscles and nerves around your eye don’t work well together, and that keeps it from moving as it should. The disorder is also known as Duane’s syndrome, Duane retraction syndrome, or Stilling-Turk syndrome.

Is Duane syndrome considered a disability?

What are the clinical features of Duane Retraction Syndrome?

It presents with a variety of clinical features including diplopia, anisometropia, and amblyopia. Duane Retraction Syndrome, also known as Stilling-Turk-Duane Syndrome, was originally described by Alexander Duane in 1905.

What are the different types of Duane syndrome?

This classification divides the cases into orthotropic-Duane, esotropic-Duane and exotropic-Duane and is more relevant than Huber’s classification when planning a surgical treatment of these cases ( Figure 9 ). Figure 9. Top row: Patient with orthotropic-Duane.

Why does Duane syndrome affect the lateral rectus?

In Duane syndrome, the 6th cranial nerve that controls the lateral rectus muscle (the muscle that rotates the eye out towards the ear) does not develop properly. Why the nerve does not develop is not fully understood. Thus, the problem is not primarily with the eye muscle itself, but with the nerve that controls to the muscle.

Can botulinum toxin cure Duane Retraction Syndrome?

The results concluded that botulinum toxin decreases the amount of deviation and leash phenomenon (upshoot or downshoot of globe with adduction). Surgery cannot cure Duane Retraction Syndrome, but it can correct for the deviation in the primary position, thereby improving a compensatory head position that can occur in some individuals.