A HISTOCHEMICAL STUDY OF THE ADRENERGIC AND CHOLINERGIC INNERVATION OF THE ANTERIOR SEGMENT OF THE RABBIT EYE.

The innervation of the anterior segment of the albino rabbit eye was studied with both the histofluorometric technique of Falck for adrenergic fibers and the thiocholine method for cholinergic fibers. Adrenergic fibers were found in heavy concentration in the iris dilator, ciliary processes, and around blood vessels. In lesser number adrenergic fibers were seen in the cornea and filtration area. Very few fibers were seen in ciliary muscle and iris sphincter. Heavy staining for fibers containing acetylcholinesterase toas seen in the iris sphincter, ciliary body, and surrounding blood vessels. The iris dilator, filtration area, and cornea also shoived moderate staining.

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