When this muscle contracts, it reduces the size of the pupil. This is the pupillary light reflex, which is an important test of brainstem function.
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en.wikipedia.org/wiki/Pupil
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Visceral motor component, pupillary light reflex; Light entering the eye causes signals to be sent to the pretectal region of the midbrain via the optic nerve (CN II). The pretectal nucleus in turn projects bilaterally to the Edinger-Westphal nucleus.
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www.med.yale.edu/caim/cnerves/cn3/cn3_12.html
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It is a normal response and dependent on the function of the optic nerves and oculomotor nerves.. For more information about the topic Pupillary reflex,
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www.sciencedaily.com/articles/p/pupillary_reflex.htm
www.sciencedaily.com/articles/p/pupillary_reflex.htm
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What is indirect pupillary light reaction? Is the Corneal reflex somatic or autonomic? Is the pupillary reflex somatic or visceral? What is the function of...
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wiki.answers.com/Q/Is_the_pupillary_light_reflex_autono...
wiki.answers.com/Q/Is_the_pupillary_light_reflex_autonomic_and_somatic
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Key words: Diabetes mellitus - Pupillary light reflex - Auto- nomic neuropathy - Peripheral neuropathy. Introduction. Abnormalities of pupillary function
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www.springerlink.com/index/T732X6020714V232.pdf
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Pupillary reflex refers to one of the reflexes associated with pupillary function. Types include: Pupillary light reflex · Accommodation reflex...
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www.answers.com/topic/pupil-constriction
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BioInfoBank Library :: Impairment of the transient pupillary light reflex in Rpe65(-/-) mice and humans with leber congenital amaurosis. Identifying photoreceptors in blind eyes caused by RPE65 mutations: Prerequisite for human gene therapy success. Patients with LCA had baseline pupillary diameters similar to normal,
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lib.bioinfo.pl/pmid:15037595
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BACKGROUND: The mechanism of reflex pupillary dilation was investigated in eight patients who were declared brain dead after rupture of intracranial vascular malformations and in eight awake volunteers. Graft function was assessed by serum creatinine. Renal cross sections were microscopically examined for acute...
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lib.bioinfo.pl/pmid:14639139
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However, there are limited choices of objective measures of visual function that are equally applicable to infants, Light-induced contraction of the iris muscle depends on the integrity of multiple central nervous system (CNS) neurons involved in the well-known pupillary light reflex (PLR). Major signal input for this...
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www.iovs.org/cgi/content/full/45/4/1259
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