FIELD: medical equipment; ophthalmology.
SUBSTANCE: first stage of measurements includes injection of light blinking to the first light-emitting diode of the first pair at frequency increased in comparison with initial frequency by 0.25 Hz. Each first light-emitting diode of following pair submit is supplied with light blinking at frequency increased in comparison with frequency of the first light-emitting diode of previous pair by 0.25 Hz. The second light-emitting diode of the first pair is injected with light blinking at frequency reduced in comparison with initial frequency by 0.25 Hz. Each second light-emitting diode of following pair is injected with light blinking at frequency reduced in comparison with frequency of the second light-emitting diode of previous pair by 0.25 Hz. Patient under test defines pair of light-emitting diodes of the least number, light blinking frequencies of which differ, and presses the button corresponding thereto. At the second stage of measurements, the first light-emitting diode of the first pair receives light blinking at frequency lower by 0.25 Hz than that of the first light-emitting diode of the pair defined at the first stage by patient under test as pair, light blinking frequencies of which differ. Each first light-emitting diode of following pair receives light blinking at frequency increased in comparison with that of the first light-emitting diode of previous pair by 0.05 Hz. The second light-emitting diode of the first pair receives light blinking at frequency lower by 0.25 Hz than that of the second light-emitting diode of the pair defined at the first stage by patient under test, light blinking frequencies of which differ. Each second light-emitting diode of following pair is injected with light blinking at frequency reduced in comparison with that of the second light-emitting diode of previous pair by 0.05 Hz. Patient under test defines pair of light-emitting diodes of the least number, light blinking frequencies of which differ, and presses the button corresponding thereto thus recording value of light blinking frequencies of light-emitting diodes of this pair. Vision resolution by light blinking frequency is calculated as difference between frequency values of the first and second light-emitting diodes recorded at the second stage.
EFFECT: method allows for evaluation of vision resolution by light blinking frequency.
1 dwg, 2 tbl, 1 ex
