Patent ID: 11890096
Assignee: CIVIL AVIATION UNIVERSITY OF CHINA
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 5:
6. The method according to claim 1, wherein the step 7) includes:
(7.1) when a number of flickering digits recognized by the subject is 0, resetting an upper limit F1 of the measurement range to be a minimum frequency value of the N groups of the frequency combinations that the subject does not recognize, and a lower limit of the measurement range to be F0=F1−2*Δf, and returning to step 4);
(7.2) when the number of flickering digits recognized by the subject is N and all of them are the digit 8, resetting the lower limit F0 of the measurement range to be a maximum frequency value of the N groups of the frequency combinations recognized by the subject, and the upper limit of the measurement range to be F1=F0+2*Δf, and returning to step 4);
(7.3) when the number of flickering digits recognized by the subject is greater than 0 and less than N, and not all of them are the digit 8, resetting the lower limit F0 of the measurement range to be the maximum frequency value of the N groups of the frequency combinations recognized by the subject, and the upper limit of the measurement range to be F1=F0+Δf, determining whether F1−F0 is less than 0.2, and if so, proceeding to step (7.4), otherwise returning to step 4);
(7.4) according to the subject's flicker fusion threshold formula (F0+F1)/2 and the measurement precision formula (F1−F0)/2, obtaining the subject's flicker fusion threshold and the measurement precision, then ending the measurement.