Anatomie comparée de l'angle irido-cornéen du chien et de l'homme

SUMMARY Compared anatomy of the canine and human irido-corneal angle. The irido-corneal angle is the ocular structure responsible for the drainage of the aqueous humor. Located between the cornea, the sclera and the iris at the periphery of the eye, the irido-corneal angle shows an inconstant architecture among species. In the dog, it is included in the ciliary cleft and made of the pectinate ligament and uveal and corneo-scleral trabecular meshworks. The aqueous humour flows through the aqueous and veinous scleral plexuses. In humans, the irido-corneal angle is outside the iris root and consists of the uveal, corneo-scleral and cribriform trabecular meshworks. These meshworks drain into the Schlemm’s canal, a structure specific to primates. These anatomic differences underline the inefficiency of the surgical antiglaucomatous techniques in the dog, whereas they are common in humans.