2015 Vision

Summary of the Actions of the ANS in the Eye

Target

Sympathetic
Function

Relevant
Receptors

Parasympathetic
Function

Relevant
Receptors

Superior tarsal

Contracts
raises eyelids

α1

 

 

Dilator pupillae

Contracts mydriasis

α1

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Sphincter pupillae

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Contracts miosis

M3

Ciliary muscle

Relaxes
improves far vision

β2

Contracts improves near vision

M3

Aqueous humor production

Affects inflow

β2 increases
α2 decreases

 

 

Aqueous humor outflow

 

 

Contraction of sphincter pupillae
increases flow through canal of Schlemm

Muscarinic

Email: Dr. Janet Fitzakerley | ©2015 University of Minnesota Medical School Duluth | Last modified: 12-feb-15 6:05 AM