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April 1967

Double Innervation of the Feline Iris Dilator

Author Affiliations

Lund, Sweden
From the Department of Histology, University of Lund, Lund.

Arch Ophthalmol. 1967;77(4):541-545. doi:10.1001/archopht.1967.00980020543019

Selective denervation and specific reactions for adrenergic and acetylcholinesterase (AChE)-containing nerve fibers demonstrate that the dilator pupillae in the cat is supplied by numerous parasympathetic fibers in addition to the wellknown sympathetic ones. The adrenergic fibers do not contain measurable quantities of AChE.