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November 1960

In Vitro Membrane Potential of the Cat Ciliary Body

Author Affiliations

New Orleans
From the Department of Ophthalmology, Tulane University School of Medicine.

Arch Ophthalmol. 1960;64(5):693-696. doi:10.1001/archopht.1960.01840010695011

Introduction  The problem of whether a potential exists across the epithelium of the ciliary body, the presumed site of aqueous humor formation, is of considerable theoretical interest. If such a potential exists it evidently will influence the steady state distribution of ions between the blood and aqueous humor and thus must be considered in any analysis of aqueous humor dynamics.1This potential would be of further interest because, at least in the frog skin, it is believed to be due to the active transport of sodium ion,2 and there is evidence that the active transport of sodium ion plays an important role in aqueous humor formation.3It is the purpose of this communication to report the measurement of a bioelectric potential generated by the ciliary body of the cat, experimentally prepared as an isolated membrane between two reservoirs.

A. Materials and Methods  Adults cats of both sexes were

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