FIELD: medical technology.
SUBSTANCE: device contains a generator of second impulses, generator of millisecond impulses, first univibrator, second univibrator, generator of 5-impulses series, first counter, second counter, time frame generator, first light source, indication block, second light source, first key for reducing time of early finishing of regulated impulse relative to reference one by 1 ms, second key for increasing time of early finishing of regulated impulse relative to reference one by 5 ms.
EFFECT: decrease of visual fatigue without usage of complex equipment.
4 dwg
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