36 non-diabetic patients with preretinal or prepapillary proliferations were examined. Nearly all patients had changes of the arteries due to arteriosclerosis or hypertension. In 22 patients the vascular new-formations were located on a level with the retina and they were anastomoses between the retinal vessels. 18 of these patients had simple or hemorrhagic glaucoma. In 14 patients the proliferations prominated into the vitreous cavity and their appearance varied greatly. Simple glaucoma was found in one and intermittent close angle glaucoma was found in another of the patients in this group.