Orthoptic Treatment of Anomalous Projection.

of Bruch'-s membrane at the optic n-erve. Three cases of partial cross ruptures of the optic nerve are reported histologically. All three are discovered at the very insertion of the lamina elastica chorioideae. The tear was caused in all cases (traumatic, expulsive haemorrhage and haemorrhagic glaucoma) by an instantaneous, probably arterial, subiretinal bleeding. Traumatic retropulsion of the optic nerve or propulsion of the bulb causes cross ruptures of the optic nerve, too, occurring at the same spot and leading to evulsion of the optic nerve.