"Ibn al-Haytham's sketch of the human optical system. The oldest known drawing of the nervous system from Kitab al-Manazir of Ibn al-Haytham (from a manuscript held in the Süleymaniye Library, Istanbul), in which the eyes and optic nerves are illustrated. It shows a large nose at the bottom, eyes on both side and a hollow optic nerve that flows out of each one towards the back of the brain. (Source: <a href=""http://www.muslimheritage.com/article/reflections-optics-time"">Reflections on the Optics of Time</a>  © Muslim Heritage)"
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