An electrosurgical system includes an electrosurgical device adapted to direct energy to tissue and a fluid path leading to the electrosurgical device. A CCD device that is sensitive to infrared light is used to capture images of the eye fundus as dynamic and still images. If a synchronization signal detector determines that there exists a synchronization signal and if the effective image area detector determines that the image is not a blank image, a controller adjusts an area captured as image data by an input signal processor. Each conductive terminal has a contact end and a pierce end. The overshoot failure proportion comprises the amount of dielectric failures that occur during the voltage overshoot condition relative to the amount of dielectric failures that occur during the normal operating condition. The longitudinal support and the attachment form a towing-eye receiving area, and the longitudinal support and the attachment each have a receiving opening for a coupling pin.