vHIT96da is a vHIT application that runs on the iphone. The reflection point of the LED light of the iphone should be in the black eye area when the goggles are worn. To calibrate, first ask the patient to gaze at the target and move the patient's head several times to the left and right at approximately 1 Hz. The vHIT test is then performed.　　 　
After the vHIT test is completed, align the green frame with the black eye reflection point of the LED light, tell the application the analysis area, and press the Analyze button. The results of the analysis are displayed in the lower white window with head speed in black and eye speed in red, and the vHIT waveform in the upper white window. Use the blue slide bar to display the calibration section in the lower white window and align the head and eye waveforms. Swipe up and down in the lower white window with your finger to change the size of the eye and head waveforms. Adjust the size of the eye waveform by swiping the left 1/3 of the white window to the eye waveform and the right 1/3 to the head waveform. Adjust the time difference between the eye waveform and the head waveform by swiping left and right with your finger. By matching the eye waveform and head waveform in the calibration section, the appropriate vHIT data can be displayed.