Fundus imaging apparatus and method therefor

摘要

A fundus image is displayed, which enables accurate positioning and focusing to be easily performed with respect to an eye to be examined even on a small display unit by selecting a display magnification. At a first display magnification, an opening portion “m” of a mask specifying a predetermined angle of field of the fundus is displayed with no part missed in both of horizontal and vertical directions of a display unit 15. At a second display magnification, the opening “m” of the mask is displayed with no part missed in the horizontal direction in the display area of the display unit 15 and with some part missed in the vertical direction. Thus, the second display magnification is used to observe an essential part when the fundus is accurately observed.

主权项

1. A fundus imaging apparatus comprising:
an observation light source configured to generate infrared observation light; and a display magnification changing unit configured to selectively change, when a fundus image of a subject's eye obtained by illuminating the subject's eye with the infrared observation light is observed, display magnifications between a first display magnification at which an opening portion of a mask area around the fundus image as a whole is displayed, and a second display magnification at which the opening portion is magnified in accordance with a length of a display unit in a longitudinal direction and displayed to display the fundus image and the mask area on the display unit.