Video Description: The illuminate version of the G-Probe is used in a very similar fashion to the standard G-Probe. The fiber optic light is constantly illuminated during the application of laser so as to guide the treatment to be over the ciliary body. The surgeon starts at the standard position with the leading edge of the probe at the limbus, but looks for transillumination of the ciliary body. If transillumination is seen, the laser pulses are placed as usual. If it is not, the surgeon moves the probe posteriorly until transillumination occurs and then laser pulses are placed as usual. This new version of the G-Probe allows for confirmation of proper placement.