[Dilatation and tortuosity of episcleral vessels in open-angle glaucoma (author's transl)].

We studied two patients with unilateral open-angle glaucoma and bilateral dilatation and tortuosity of the episcleral vessels; the condition was thought to be congenital. Gonioscopy showed that all the eyes were engorged with blood. Episcleral venous pressure was not measured, but resistance to outflow, measured tonographically, showed a marked increase. The clinical significance of this type of glaucoma is pointed out.