People associate stereo with listening. Melody Davis wants them to link stereo with vision. Davis, an assistant art professor at Sage College of Albany, on Friday helped open the exhibit “Victorian Narrative Stereography: 1855-1910” in the college’s Little Gallery in Rathbone Hall. Visitors will see visual marvels of the 1800s — a time when stereographs and stereoscope viewing devices were prime attractions for the home box office. Each stereo picture card has two images side by side. The images are almost exactly alike, two perspectives of the same object. A minor deviation in the photos is necessary to achieve a 3-D effect when viewed with special lenses.