Al-Hayhtam the Man of Experience.First Steps in the Science of Vision

Abu'Ali al-Hasan ibn al-Hasan ibn al-Haytham (965-1039 A.D.) was one of the most significant figures in the history of optics between antiquity and the 17th century. His explanation of the vision has been revolutionary in the history of medicine and vision. In his Kitab al-Manazir he studied optical illusions, the structure of the eye, perspective, atmospheric refractions etc. In particular his theory in which the principles of light and perspective are explained for the first time in the Middle Ages, had a great impact upon European culture of the medieval and modern eras.