SVV( Subjective Visual Vertical) is a clinical test that measures the subjective vertical direction, measures the deviation from the actual vertical direction, that is, the gravity direction, and detects gravity sensitivity disorders. The app is available on iPad and iPhone. At the time of inspection, the vertical line is rotated by the remote controller.
When using an iPad, cover the area around the circular display frame of the vertical line with black paper as shown in the figure on the right below.
Below is a screenshot of the help page.
