Modifications to a Zeiss fundus camera to enable production of holograms of selected sites of an optic fundus are described. Resolution near the resolution limit of the camera has been obtained in holograms of the fundi of anaesthetized cats. Laser intensities on the retina are below injury levels.
R. L. Wiggins, K. D. Vaughan, and G. B. Friedmann, "Holography Using a Fundus Camera," Appl. Opt. 11, 179-181 (1972)