Accommodation and the Pupillary light reflex pathways - USMLE Forums
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Old 08-09-2012
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Eye Accommodation and the Pupillary light reflex pathways

are both these pathways the same???.. i know they innervate different things.. but are they the same besides what they innervate?
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Old 08-09-2012
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No they are totally different pathways.. the only thing similar with them are the efferent limbs: involvement of the edinger westphal nucleus and the ciliary ganglion.

Accommodation: The afferent limbs of the circuit includes the
Retina
CNII
lateral geniculate body
visual cortex.
visual association cortex
supraoculomotor nuclei,

Pupillary light reflex: afferent limbs
Retina
CN II
Lateral Geniculte Nucleus
Pretectal Nucleus in Mid-brain
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Old 08-09-2012
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Quote:
Originally Posted by SatnightPalsy View Post
are both these pathways the same???.. i know they innervate different things.. but are they the same besides what they innervate?
that also explains the answer to this question which i'll leave you to figure out

A patient has normal accommodation reflex but no reaction on testing light reflex. What is the likely diagnosis?
a. Holmes Adie pupil
b. Argyll-Robertson pupil
c. Hutchison pupil
d. Marcus Gunn pupil
e. Horner‟s pupil
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Old 08-09-2012
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B.. thanks i got confused reading something lol, i cleared it up later!.
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