Relative Afferent pupillary Defect Flashcards
What is relative afferent pupilalry defect also known as?
Marcus-Gunn pupil
How can a relative afferent pupillary defect be diagnosed?
Swinging light test
What is a relative afferent pupillary defect due to?
A lesion anterior to the optic chiasm
Where can the lesion resulting in a relative afferent pupillary defect be?
Optic nerve or retina
What finding from the swinging light test might indicate a relative afferent pupillary defect?
The affected and normal eye appears to dilate when light is shone on the affected
What are the retinal causes of a reative afferent pupilalry defect?
Retinal detachment
What are the optic nerve causes of relative afferent pupillary defect?
Optic neuritis e.g. multiple sclerosis
What is the afferent pathway of pupillary light reflex?
Retina → optic nerve → lateral geniculate body → midbrain
