kherchi, AmiraFilal, Bilel2021-11-082021-11-082021http://hdl.handle.net/123456789/11694Undoubtedly, Muslims created one of the most impressive civilizations in the history of mankind during the medieval period. The motivating forces of this civilization were the principals of Islam and Hadith along with the Arabic language that strongly support the quest for knowledge and sciences. Eventually, Islamic medieval civilization became both the cause and source for later European advances, as Muslim scientists and thinkers were the pioneers to numerous scientific contributions .They came up with their own thoughts, culture, learning, science, philosophy, medicine, and architecture …etc that were unique in every field. Nearly all Islamic developments and innovations were transmitted to Europe under many circumstances including: the crusades, trade relations, the translation movement, and the migration of the westerners to the Islamic world. In other words, Western civilization- product of Muslim-Christian contacts- is regarded as the heir to the Islamic knowledge. However, the majority of western scholars attempted to ignore and even distort the truth through their narratives and counterfeits to minimize the dazzling flowering of Islamic medieval civilization and its great role to the role of a guardian of Geek thought. This research work tries to redress this wrong and recall the scientific contributions of Abu Ali Al-Hasan Ibn Al-Hasan Ibn Al-Haytham, Ala al-Din Abi al-Hazm Ibn al-Nafis al-Qurashi, and Abu Ali al-Husayn Ibn Abd-Allah Ibn al-Hassan Ibn Ali Ibn Sina to prove the great influence they had on the booming of the European renaissance and the development of Western modern civilization. They disapproved all the Western libeling and allegations through their lasting achievements and theories in many scientific fields particularly in the sciences of Optics and medicine.enContributionInfluenceMuslimmedicineOther