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January 1969

Autonomic Innervation of the Cat IrisAn Electron Microscopic Study

Author Affiliations

Bethesda, Md
From the Laboratory of Neuroanatomical Sciences, National Institute of Neurological Diseases and Blindness, National Institutes of Health, Public Health Service, US Department of Health, Education, and Welfare, Bethesda, Md.

Arch Ophthalmol. 1969;81(1):70-83. doi:10.1001/archopht.1969.00990010072011

An identification of individual adrenergic and cholinergic nerve terminals would appear to be possible at the ultrastructural level. It is submitted that there exists a significant dual innervation of the feline dilator muscle and to a lesser extent a dual innervation of the feline sphincter muscle. Selective degeneration experiments have been performed showing a rapid degeneration of the specific nerve terminals with sparing of the unaffected fibers.