“…From this large material and his own histo-pathological studies he verified the conclusion of Collins (1 893, 1899). Cross (I 896), Seefelder (1906Seefelder ( ,1920, and Lagrange (1 925) that the probable cause of congenital glaucoma was a fetal maldevelopment of the structures in the irido-corneal angle. This view is now generally accepted, although the exact mechanism of the block to outflow is still a matter of dispute.…”