on the retina: he might have been the first to recognize that retina was the part of the eye responsible for sensing light, rather than the lens as was commonly thought. Modern scholars dispute whether this is what he meant it his Kulliyat, but Averroes also stated a similar observation in his commentary to Aristotle's Sense and Sensibilia: "the innermost of the coats of the eye [the retina] must necessarily receive the light from the humors of the eye [the lens], just like the humors receive the light from air." Another of his departure from Galen and the medical theories of the time is his description of stroke as produced by the brain and caused by an obstruction of the arteries from the heart to the brain. This explanation is closer to the modern understanding of the disease compared to that of Galen, which attributes it to the obstruction between heart and the periphery. He was also the first to describe the signs and symptoms of Parkinson's disease in his Kulliyat, although he did not give the disease a name. Legacy In Jewish tradition Maimonides (d. 1204) was among early Jewish scholars who received Averroes's works enthusiastically, saying he "received lately everything Averroes had written on the works of Aristotle" and that Averroes "was extremely right". Thirteenth-century Jewish writers, including Samuel ibn Tibbon in his work Opinion of the Philosophers, Judah ibn Solomon Cohen in his Search for Wisdom and Shem-Tov ibn Falaquera, relied heavily on Averroes's texts. In 1232, Joseph Ben Abba Mari translated Averroes's commentaries on the Organon; this was the first Jewish translation of a complete work. In 1260 Moses ibn Tibbon published the translation of almost all of Averroes's commentaries and some of his works on medicine. Jewish Averroism peaked in the fourteenth century; Jewish writers of this time who translated or were influenced by Averroes include Kalonymus ben Kalonymus of Arles, France, Todros Todrosi of Arles, Elia del Medigo of Candia and Gersonides of Languedoc. In Latin tradition Averroes's main influence on the Christian West was through his extensive commentaries on Aristotle. After the fall of the Western Roman Empire, western Europe fell into a cultural decline that resulted in the loss of nearly all of the intellectual legacy of the Classical Greek scholars, including Aristotle. Averroes's commentaries, which were translated into Latin and entered western Europe in the thirteenth century, provided an expert account