S V Logvinov | PubMed Health

PubMedDate not supplied

[Microwaves and the visual analyzer].

The results of studying an effect of microwaves on the different regions of visual analyzer are investigated. The morphofunctional changes at the light-optic and electron-microscopic levels are revealed. The changes involve not only peripheric area of visual analyzer but also its central regions. Some epidemiologic observations are indicative of: altered sizes of blind spot; decreased magnitudes of optic rheobase and chronaxy; color vision disorder; increased diastolic pressure in central artery of the retina. Study of bioelectrical activity of the retina enabled some investigators to make a conclusion about a reaction disorders occurring in the subcortical visual centers. It is noted that the animal studies not always explain unequivocally the microwave effects on the visual analyzer.

Animals↗

PubMedDate not supplied

[Early ultrastructural reactions in various parts of the visual analyzer in guinea pigs after thermogenic microwave irradiation].

A single total radiation of guinea pigs by means of microwaves of thermogenic intensity (energy density stream 60 mVt/sm2) and exposition for 10 min produces ultrastructural reactions in various parts of the visual analyser, differing in their manifestation degree. The most essential alterative changes have been revealed in the retina, appearing in 6 h after radiation, as degeneration of the membrane disks of the photoreceptors and as enhancement of phagocytic activity of pigmentocytes, and immediately after the radiation--as destructive disturbances of mitochondria in radial glyocytes and as reaction of the synaptic apparatus. In the cerebral visual centers a higher reactivity of neurons of the external geniculate bodies than in the visual cortex is noted, but ultrastructural disturbances of the hematoencephalic barrier and synapses of the visual cortex are more manifested. Early ultrastructural changes in the optic nerve are least manifested.

Animals↗