Photography of a fundus lesion with the new Zeiss * fundus camera is a procedure so simple and reliable that a modification to the instrument would seem hardly necessary. The desire to scan the fundus with the camera without losing the field of view with each camera movement, however, prompted a change in the camera base that has proven to be of considerable value in improving the camera's already excellent performance.
For proper operation of the Zeiss fundus camera, it is necessary that the bright illuminated spot from the exit pupil of the camera be focused in the patient's pupil. If exposures of areas slightly different from the original view are desired, both the patient's eye and the camera must be shifted. These movements, however small, result in the light's being either partly or completely displaced onto the patient's iris (Fig. 1). The need to recenter the illumination system in the
STENSTROM WJ. A Modification of the New Zeiss Fundus Camera. Arch Ophthalmol. 1960;64(6):935-938. doi:10.1001/archopht.1960.01840010937016