... the folder of SaccadeVR_ViveProEye. Unixtime of the computer is recorded in a specific text file when the saccade task starts in each saccade trial. With the recorded time, the latency (response time) of saccadic eye movement is calculated. We use version 2 in SRanipal SDK to measure the eye movement and to enable eye data callback function to continue to record the data of ocular movement independently of the main thread of the program.