The most common vectographs, if any examples of the process may be called common, are those in the booklets of "Ortho-Fusor" stereoscopic eye exercises first issued by Bausch and Lomb in the 1940s and available for many years. Also relatively common is the Titmus Fly Stereotest, a greatly enlarged stereoscopic image of a fly used by optometrists and ophthalmologists to determine if patients, especially young children, have normal stereoscopic vision. Currently available vectographic vision training aids, marketed under the registered trademark name "Vectogram", include a variety with the left-eye and right-eye images overlaid on separate transparent plastic sheets so as to be adjustable. Subjects include a quoits hoop, a spirangle, and a hyperstereoscopic view of the Chicago skyline.
