To photograph the posterior pole, the center of focus is:

The center of focus for photographing the posterior pole is ideally positioned between the macula and the optic disc. This central area encompasses crucial structures of the retina, including the macula, where the sharpest vision occurs, and the optic disc, which is where the optic nerve exits the eye. By focusing on the region between these two landmarks, you can capture a comprehensive view of the critical features of the retina, including the fovea, the surrounding retina, and important vascular structures. This approach allows for a more detailed assessment of the retinal health and any potential pathology present in this vital area. The choice reflects the optimal balance for photographic clarity and anatomical relevance in the examination of the posterior pole.