What is Duane Syndrome?
Duane syndrome is a congenital state that affects the movement of the eye. Although the cause of the state is not fully understood, it is likely that it stems from the absence of the cranial nerve. Duane syndrome is not a threatening life and is a very rare condition that represents 1-5% of eye movement disorders.
People with Duane's syndrome usually have difficulty moving the eyes from the nose. The affected eye often remains calm or moves up when one tries to look at the nose with an intact eye. These symptoms are referred to as Duane's type I syndrome and represent 70-80% of cases.
There are two other types of Duane syndrome. In type II, one or both eyes have difficulty looking towards the nose. Type II represents about 7% of all cases. The third type, which represents 15% of cases, combines symptoms of type I and II.
people with Duan syndrome cannot develop a skull nerve called Abducens. This nerve is in the czatíte eye muscles that move the eye laterally. The condition develops before birth and most liThe syndrome work is diagnosed before they are 10 years old. Most cases of Duane's syndrome affect only the left eye, although it can affect the right eye or both at once. This condition is more common in women than in men, even if they do not understand why.
Duane syndrome is likely to evolve during the first trimester and genetic and environmental factors can play a role. Dominant and recessive genes were also associated with the condition. In the dominant case, the patient needs only one copy of the defective gene, while in a recessive case he needs two. People with recessive diversity of syndrome can be carriers without showing symptoms.
Most syndrome patients have no other congenital defects. In approximately 30% of cases, however, other congenital, conditions are present. Duane Syndrome was associated with Goldenhar syndrome, Holt-Oram syndrome, Wildervancck Syndrome, Morning Fame Syndrome and Okihiro syndrome. NavMalformations in the eyes, ears, skeleton, nervous system and kidneys may be present.
There is no cure for Duane's syndrome, although the condition is not life -threatening. Many patients learn to compensate for problems with side eye movement by holding their heads inclined or to the side. The loading of the head towards the affected eye allows patients with this condition to maintain binocular only vision.