Abstract: An eyeball observing device comprising an illuminating optical system for illuminating a portin to be examined; a photographing optical system comprising an object lens group equipped with a transparent body which is designed to be in contact with the eyeball and an imaging lens group, the system allowing the image beams coming from the portion to be examined to reach an imaging surface; and a motion picture camera, wherein an ultrasonic oscillator for detecting the position of the examined eye is mounted on the transparent body. The device can provide a clear image of a desired portion of an eyeball quickly.