The level of ascorbate in the aqueous humor and surrounding intraocular structures in enucleated arterially perfused rabbit eye was investigated. The enucleated eye preparation was shown to be capable of secreting ascorbate from the perfusate into the aqueous humor. Ascorbate in the iris, ciliary body and cornea was released into the aqueous humor when the eye was perfused with ascorbate-free solution. Failure to obtain aqueous flow rates from the decay of ascorbate in the anterior chamber was due to the contribution of ascorbate from these ocular tissues during the perfusion. Histochemically, ascorbate was localized in the pigmented epithelial layer in the valleys between the ciliary processes and the pars plana of the ciliary body and in the iris. In the cornea, distinct localization of ascorbate was observed in the endothelium and basal cell layer of the epithelium.

Keywords:
Ascorbate, Arterial perfusion, Aqueous humor, Iris, Ciliary body, Lens, Cornea
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© 1985 S. Karger AG, Basel
1985
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