Fig. 26. Different types of collector channels drawn after specimens injected by India ink-gelatin. A. Direct collector channel, running directly toward the episcleral venous network. B. Indirect collector channels, connecting Schlemm's canal with the intrascleral venous plexus. C. Bridges (arrows) formed by the canal itself. (Rohen JW, Rentsch FJ: Electronenmikroskopische Untersuchungen über den Bau der AuÂenwand des Schlemm'schen Kanals unter besonderer Berücksichtigung der AbfluÂkanäle und Altersveränderungen. Graefes Arch Clin Exp Ophthalmol 177:1, 1969)