A medical system , comprising: at least one processor , a display , coupled to the at least one processor ; at least one image sensor , 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 , the at least the image of the eye ; display, via the display , 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 , a second graphic overlay 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 , information that indicates the orientation of the eye . at least one processor , a display , coupled to the at least one processor ; at least one image sensor , 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 , the at least the image of the eye ; display, via the display , 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 , a second graphic overlay 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 , 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 , the at least the image of the eye ; display, via the display , 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 , a second graphic overlay 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 , information that indicates the orientation of the eye . <EOS>