Tag: Eye Movement Disorders

  • Paroxysmal Positional Nystagmus

    Paroxysmal Positional Nystagmus: Definition and Description of Paroxysmal Positional Nystagmus: Paroxysmal Positional Nystagmus (PPN) is a form of vertigo characterized by involuntary eye movements associated with changes in head position. This condition often leads to episodes of dizziness or a sensation of spinning that can be triggered by certain head movements, such as lying down…

  • Ocular Motor Apraxia, Cogan Type

    Ocular Motor Apraxia, Cogan Type: Definition and Description of Ocular Motor Apraxia, Cogan Type: Ocular Motor Apraxia, Cogan Type is a rare neurological condition characterized by an inability to initiate voluntary eye movements, particularly saccadic movements—those quick, simultaneous movements of both eyes in the same direction. This disorder is typically associated with dysfunction in the…

  • Labyrinthine Positional Nystagmus

    Labyrinthine Positional Nystagmus Definition and Description of Labyrinthine Positional Nystagmus Labyrinthine Positional Nystagmus is a type of involuntary eye movement that is specifically associated with changes in head position. This condition is often characterized by an abnormal response of the vestibular system, which coordinates balance and eye movements. In medical terminology, “nystagmus” refers to a…