Autonomic neuropathy in the skin: a histological study of the sympathetic nerve fibres in diabetic anhidrosis.

In diabetics with the anhidrotic syndrome, autonomic nerve fibres were studied in skin biopsies using argentic techniques and light microscopy. The Minor test was used to differentiate normal from anhidrotic skin areas. In the anhidrotic areas, histology of the nerve fibres showed beading, spindle-shaped thickening and fragmentation adjacent to the sweat glands.

[Investigations on the relationship between intraocular pressure and perifoveal capillary circulation in glaucoma patients using the entoptic blood corpuscle phenomenon (author's transl)].

Blood circulation in the central retina was examined in 30 eyes suffering from glaucoma, using the entoptic phenomenon to count leucocytes travelling through the retinal capillaries in the macula area. Two measurements were taken for each eye at different intraocular pressure levels and the results were compared with each other. They showed that reduction of an originally high intraocular tension level significantly increased the blood flow.