Ibn al-Haytham (965–1040 CE), known in the West as Alhazen, was a renowned Arab scientist, mathematician, and philosopher during the Islamic Golden Age. Often referred to as the father of modern optics, his groundbreaking work laid the foundations for numerous scientific advancements. • His seminal book, “Kitab al-Manazir” (The Book of Optics), revolutionized the understanding of light, vision, and the mechanics of the human eye. • He is credited with developing the scientific method, emphasizing observation, experimentation, and the testing of hypotheses—a methodology still used in modern science today. • Ibn al-Haytham’s contributions extended beyond optics; he made advancements in astronomy, mathematics, and engineering, solidifying his role as a polymath of global influence.