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Related Concept Videos

Multiple Sclerosis l: Introduction01:19

Multiple Sclerosis l: Introduction

Multiple sclerosis is a chronic autoimmune disease of the central nervous system (CNS) that affects the brain, spinal cord, and optic nerves. It is an inflammatory demyelinating disorder and a leading cause of neurological disability in young adults.EpidemiologyMS commonly begins between 20 and 40 years of age and is twice as common in women. Its exact cause remains unclear, but genetic susceptibility contributes, with higher risk in first-degree relatives and identical twins. A greater...
Accessory Structures of the Eye01:17

Accessory Structures of the Eye

Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...
Muscles of the Eye01:20

Muscles of the Eye

The muscles of the eye are sophisticated structures that control eye movement and focus, allowing for the precise and rapid adjustments necessary for vision. The human eye is controlled by ten muscles — six extraocular muscles, three intraocular muscles, and one primary eyelid retractor muscle.
Extraocular Muscles
The six extraocular muscles surround the eyeball and control its movements. They are responsible for a wide range of eye motions, including looking up, down, left, right, and rotating...

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Characterizing the Relationship Between Eye Movement Parameters and Cognitive Functions in Non-demented Parkinson's Disease Patients with Eye Tracking
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Eye movement abnormalities in multiple sclerosis.

Sashank Prasad1, Steven L Galetta

  • 1Division of Neuro-Ophthalmology, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA 02115, USA. Sashank.prasad@uphs.upenn.edu

Neurologic Clinics
|July 20, 2010
PubMed
Summary
This summary is machine-generated.

Multiple sclerosis (MS) patients often experience visual symptoms due to eye movement disorders affecting brain pathways. Understanding these neuroanatomic issues aids diagnosis and treatment.

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Area of Science:

  • Neuroscience
  • Ophthalmology
  • Neurology

Background:

  • Multiple sclerosis frequently causes visual disturbances.
  • These symptoms stem from eye movement abnormalities.
  • Disruptions in brainstem, cerebellum, and cerebral pathways are implicated.

Purpose of the Study:

  • To detail common eye movement abnormalities in multiple sclerosis patients.
  • To identify the neuroanatomic localization of these visual pathway disruptions.
  • To guide physicians in diagnosis and therapeutic decision-making for MS-related visual issues.

Main Methods:

  • Review of clinical presentations of visual symptoms in multiple sclerosis.
  • Correlation of specific eye movement abnormalities with affected neuroanatomic pathways.
  • Analysis of diagnostic and therapeutic implications.

Main Results:

  • Common abnormalities include internuclear ophthalmoplegia, ocular motor palsy, ocular misalignment, pathologic nystagmus, impaired saccades, saccadic intrusions, and impaired pursuit.
  • These are linked to disruptions in the brainstem, cerebellum, and cerebral hemispheres.
  • Neuroanatomic localization provides a framework for understanding these deficits.

Conclusions:

  • Detailed knowledge of MS-related eye movement abnormalities and their localization is crucial.
  • This understanding assists clinicians in accurate diagnosis.
  • It also supports effective therapeutic strategies for visual dysfunction in multiple sclerosis.