STUDIES ON LEONARDO DA VINCI by Kim H. Veltman from the premier - Maatricht mcluhan institue of Netherlands.he writes in the European Centre for Digital Culture, Knowledge Organisation and Learning Technology
...Werner believed that Leonardo's theory of vision owed much to the Arabic tradition, but had also been modified as a result of his own experiments with the camera obscura. Werner went on to consider Leonardo's work on other optical problems: binocular and stereoscopic vision, optical illusions, his experiments to demonstrate the rectilinear propagation of light. These, claimed Werner, derived mainly from Alkindi and Alhazen....
