| 摘要 |
PROBLEM TO BE SOLVED: To move a composed and outputted fixation target position to a proper position of a display device according to the imaging magnification of an eye to be tested. SOLUTION: When an imaging lens is moved to show the state where the imaging magnification of the fundus image Pr of the eye to be tested E is changed, and the image is enlarged from (a) to (b), a mark M1 is matched to about the center of a macular part Po of the eye in (a), but the macular part Po is shifted from the mark M1 in (b). The moving quantity of the mark M1 required in this case is set to n.a from the center when the imaging magnification is n times when the position of the mark 1 is located in a distance a from the center. |
