METHOD FOR DETERMINATION OF LEVEL OF VISUAL FATIGUE Russian patent published in 2010 - IPC A61B3/00 

FIELD: medicine.

SUBSTANCE: invention refers to medicine and medical equipment and aims at determination of the level of visual fatigue. A person being tested is exposed to a fatigue factor. Before the exposure and periodically during the exposure, paired light pulse train of duration 200 ms, separated by pulse separation 70 ms, repeated every 1 s of regular time interval is presented to the person being tested. The successive approximation method is used to determine duration of threshold pulse separation whereat two pulses in a pair are fused in one. The level of visual fatigue (LVF) is calculated by formula: LVF_i=(TPS_i-TPS₀)100%/TPS_i; i=1,2,…,n; where TPS₀ is duration of the threshold pulse separation before the exposure to the fatigue factor; TPS_i is duration of the i-th threshold pulse separation during the exposure to the fatigue factor; n is a number of measurements of the threshold pulse separation during the exposure to the fatigue factor.

EFFECT: method allows for higher accuracy of determination of the level of visual fatigue.

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