FIELD: medicine.
SUBSTANCE: device has control board, point light source, counter, indication unit, pulse generator, millisecond pulse generator, three gate multivibrators one of which has regulated pulse duration, AND gate, flip-flop, halver and rectifier. Device provides safety of testing (risk of damage of retina by high intensity of shown light pulses is excluded). Precision is improved due to elimination of error in finding of excitement time as like duration light pulses are shown in pair.
EFFECT: improved efficiency; improved precision.
4 dwg
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