Anorthoscope :: Anorthoscope (n.) An optical toy for producing amusing figures or pictures by means of two revolving disks, on one of which distorted figures are painted..
Orthoscope :: Orthoscope (n.) An instrument designed to show the condition of the superficial portions of the eye.
Orthoscopic :: Orthoscopic (a.) Giving an image in correct or normal proportions; giving a flat field of view; as, an orthoscopic eyepiece..