Disclosed herein are systems and methods for assisting a surgeon in performing a surgical procedure on an eye. The surgical procedure involves inserting an elongated probe through the anterior chamber and into the eye into a target tissue area including the trabecular meshwork and Schlemm's canal. An exemplary system is an optical microscope for a surgeon to view an eye on a microscopic image during a procedure, and optical coherence tomography (OCT) configured to perform an OCT scan of a target location in a target tissue region during the procedure. ) A device and an image processing device configured to generate an augmented image by superimposing an OCT image of the target location and a graphic visual element for identifying the location, the graphic visual element being elongated by the surgeon. Aligned with the microscopic image to assist in advancing the distal end of the probe to the target location. [Selection diagram] Fig. 6
