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:
Ruete's Ophthalmotrope nd model . en Ruete ophthalmotrope second model of demonstrates both the movements of the eye and importantly the action of the ocular muscles Ruete Ein neues Ophthalmotrop zur Erluterung der Functionen der Muskeln und brechenden Medien des menschlichen Auges Leipzig Druck und Verlag von Teubner Christian