Transport processes across the rabbit corneal epithelium: a review.

The corneal epithelium of the rabbit is functionally characterized as a "tight" ion transporting cell layer. Its barrier properties arise from the high electrical resistance of both the outermost cell membranes and the paracellular zonulae occludens. The specific ion transport process and secondary fluid transport by this tissue are modulated via cyclic AMP. There is evidence for the autonomic control of C1- secretion by the corneal epithelium.