Eye Deficits

Contents

Anatomy

 

 

EYE MOVEMENTS AT A GLANCE (diagram below)

Lesion 1. RIGHT Vestibular nuclei or nerve

staggering to the RIGHT;
LEFT nystagmus

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(575k) (287k)

Lesion 2. RIGHT Frontal eye fields (FEF)

both eyes deviated to the RIGHT (away from the hemiplegia); inability to voluntarily turn eyes past the midline to the LEFT; NO muscle atrophy; NO diploplia

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(574k) (287k)
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(660k) (330k)

Lesion 3. LEFT PPRF

both eyes deviated to the RIGHT (toward the hemiplegia); inability to voluntarily turn eyes past the midline to the LEFT; NO muscle atrophy; NO diploplia

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(624k) (312k)
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(355k) (178k)

Lesion 4. LEFT Abducens Nucleus

both eyes deviated to the RIGHT; inability to voluntarily turn eyes past the midline to the LEFT; ATROPHY of the LEFT lateral rectus but not the right medial rectus; NO diploplia

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(337k) (170k)
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(559k) (279k)

Lesion 5. LEFT Abducens nerve

LEFT eye deviated medially
Diploplia (corrected by turning head to LEFT)
ATROPHY of the LEFT lateral rectus

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(398k) (199k)
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(508k) (254k)

Lesion 6. RIGHT MLF

RIGHT eye deviated laterally
Diploplia (corrected by turning head to the LEFT)
NO atrophy of the right medial rectus (can still contract the right medial rectus during convergence; convergence center is rostral to the occulomotor complex)

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(637k) (319k)
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(280k) (140k)
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(473k) (237k)

Eye Deficits Review Diagram