Patent ID: 7306336

Claim:
An apparatus for observing a fundus of an eye of an examinee, the apparatus comprising: an image-pickup unit that obtains a flindus image in real time; a monitor; a display control part that displays the obtained fundus image on a monitor; a determination part that determines a standard fundus image based on the displayed fundus image; a memory part that stores the determined standard fundus image, and stores a fundus image obtained after the determination of the standard fundus image as a present fundus image every one frame; and a calculation part that compares the present fundus image with the standard fundus image two-dimensionally to obtain a positional difference of the present fundus image from the standard fundus image, wherein the display control part corrects a display position of the present fundus image so as to have a positional relationship approximately corresponding with the standard fundus image based on the obtained positional difference, and renews the corrected present fundus image every one frame to display on the monitor, wherein the determination part determines the present fundus image, which is corrected to be displayed, as a new standard fundus image at predetermined frame intervals, and wherein the memory part erases the standard fundus image already stored, and stores the determined new standard fundus image.