Aqueous humor outflow in Beagles with inherited glaucoma: gross and light microscopic observations of the iridocorneal angle.

Gross and light microscopic examinations of the ocular outflow pathways were performed on Beagles with inherited glaucoma subsequent to constant-pressure perfusion of the anterior chamber and observations compared with those of nonperfused and perfused eyeballs (bulbus oculi) from healthy dogs. Iridocorneal angle changes that were noted were interpreted to be secondary, supporting the hypothesis that the disease in the Beagle is an open-angle glaucoma.