What is Ocular Motor Apraxia? Apraxia OcularMotorApraxia RareDiseases
Epidemiology Ocular motor apraxia is a neurological condition resulting in an inability to turn the eyes voluntarily in a horizontal manner. Ocular Motor Apraxia is known by a variety of terms. OMA is sometimes referred to as Cogan's Ocular Motor Apraxia or Saccadic Initiation Failure .
Cause and types OMA can be an independent condition, have a hereditary component, or be linked to other syndromes. The Cogan-type of idiopathic congenital OMA is commonly accompanied by developmental delay. It can also develop later in life and is referred to as acquired OMA. OMA has been found in a variety of clinical disorders, including metabolic and neurological diseases. Ataxia with oculomotor apraxia, ataxia-telangiectasia, Gaucher's disease, and Joubert syndrome are a few examples.
Since some infants with ISID do not appear to visually follow a moving huge object, they are initially misdiagnosed as blind. Horizontal head thrusts become apparent as head control develops, usually around 4–6 months of age. In typically developing children, the frequency of head movements decreases as they get older during gaze transitions.
Epidemiology Males are affected twice as often as females by Cogan-type ocular motor apraxia. By the third or fourth month of birth, the jerking head motions associated with this disease have usually appeared. In the medical literature, about 50 cases have been reported. Only a few examples of acquired OMA have been documented in the medical literature. Ataxia with oculomotor apraxia The condition ataxia with oculomotor apraxia is characterized by movement impairments that increase with time.
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