A medical system, comprising: at least one processor, a display (116, 262), coupled to the at least one processor; at least one image sensor (160, 272), coupled to the at least one processor; and a memory medium that is coupled to the at least one processor and that includes instructions, when executed by the at least one processor, cause the medical system to: acquire, via the at least one image sensor, at least an image of an eye of a person; determine a location of an iris of the eye from the at least the image of the eye; determine a position of a suction ring from the at least the image of the eye; display, via the display (116, 262), the at least the image of the eye; display, via the display (116, 262), a first graphic overlay on the at least the image of the eye that indicates the location of the iris of the eye; display, via the display (116, 262), a second graphic overlay (330, 334) on the at least the image of the eye that indicates the position of the suction ring; determine a plurality of iris structures from the at least the image of the eye; determine an orientation of the eye based at least on the plurality of iris structures from the at least the image of the eye; and display, via the display (116, 262), information that indicates the orientation of the eye. at least one processor, a display (116, 262), coupled to the at least one processor; at least one image sensor (160, 272), coupled to the at least one processor; and a memory medium that is coupled to the at least one processor and that includes instructions, when executed by the at least one processor, cause the medical system to: acquire, via the at least one image sensor, at least an image of an eye of a person; determine a location of an iris of the eye from the at least the image of the eye; determine a position of a suction ring from the at least the image of the eye; display, via the display (116, 262), the at least the image of the eye; display, via the display (116, 262), a first graphic overlay on the at least the image of the eye that indicates the location of the iris of the eye; display, via the display (116, 262), a second graphic overlay (330, 334) on the at least the image of the eye that indicates the position of the suction ring; determine a plurality of iris structures from the at least the image of the eye; determine an orientation of the eye based at least on the plurality of iris structures from the at least the image of the eye; and display, via the display (116, 262), information that indicates the orientation of the eye. acquire, via the at least one image sensor, at least an image of an eye of a person; determine a location of an iris of the eye from the at least the image of the eye; determine a position of a suction ring from the at least the image of the eye; display, via the display (116, 262), the at least the image of the eye; display, via the display (116, 262), a first graphic overlay on the at least the image of the eye that indicates the location of the iris of the eye; display, via the display (116, 262), a second graphic overlay (330, 334) on the at least the image of the eye that indicates the position of the suction ring; determine a plurality of iris structures from the at least the image of the eye; determine an orientation of the eye based at least on the plurality of iris structures from the at least the image of the eye; and display, via the display (116, 262), information that indicates the orientation of the eye.