An optical mouse is a pointing device that uses light to detect its movement on a surface. There are several synonyms for this device, including laser mouse and LED mouse. A laser mouse works by emitting a laser beam that reflects off the surface and is then detected by a sensor. An LED mouse uses a light-emitting diode to illuminate the surface and detect its movement. Other alternatives are wired mouse and wireless mouse, which refer to the way the device connects to the computer. Overall, an optical mouse is an essential tool for navigating a computer screen and there are many options available to choose from.