About a role of ophthalmologic researches in early diagnostics of a noise pathology
Influence of noise leads to development of changes in microcirculation system that can be at the bottom of pathological processes in bodies. Microvascular changes in an organ of vision cause infringement of metabolism in eye tissues, deterioration of functional characteristics of the visual analyzer and decrease in visual working capacity. Complaints to passing exhaustion of eyes concern early signs of changes of an organ of vision. Further increase of thresholds of brightness sensitivity, decrease in amplitude of electroretinogram develops, dilatation, coil and narrowing of capillaries of a conjunctiva. Critical structures of an organ of vision at influence of noise are vascular system and the receptors. In a complex of pathogenetic mechanisms the leading part of the got microvascular anomalies is doubtless. Under the influence of noise there is a narrowing of peripheral vessels, permeability of vessels of a retina therefore metabolism in eye tissues suffer. That leads to dystrophic and sclerous changes. Trophics infringement conducts to morphological instability actual for visual perception of elements of a retina that finally leads to depression of photochemical processes and infringement of carrying out of a nervous impulse in the higher floors of visual system. The revealed changes from an organ of vision can be qualified as acoustic ophthalmopathy. Duly diagnostics acoustic ophthalmopathy at ophthalmologic inspection of the persons, exposed to professional influence of noise, allows in due time, on early stages to reveal development of occupational disease and to define directions of its preventive maintenance.