Abstract: An optical mouse employs an optical mouse controller and an optical mouse sensor. In operation, the optical mouse sensor generates an image sensing report signal indicative of a movement of the optical mouse over a surface of an object and communicates the image sensing report signal to the optical mouse controller based on a CPI resolution setting of the optical mouse sensor. To be responsive to varying applications, the optical mouse sensor detects a dynamic movement variable associated with the movement of the optical mouse over the surface of the object and controls a switching of the CPI resolution setting among at least two different CPI resolutions based on a detection of the dynamic movement variable.