This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Fundus photograph of normal right eye. Fundus photograph of the right eye showing fundus with no sign of disease or pathology It is seen from front so that left in each image is to the person's right The gaze is into the camera so the macula is in the center of the image and the optic disk is located towards the nose right in image