Hunayn ibn Ishaq

Hunayn ibn Ishaq, known to medieval Europe as Johannitius, was the paramount figure of the Graeco-Arabic translation movement. Born in Al-Hirah to an Arab Nestorian Christian family, he mastered Greek, Syriac, Arabic, and Persian. Caliph al-Ma'mun appointed him director of the House of Wisdom (Bayt al-Hikma) in Baghdad, where he led a methodical team that translated foundational Greek scientific and philosophical works into Syriac and Arabic.

Beyond his monumental translation of Galen, Hippocrates, Plato, and Aristotle, Hunayn was a groundbreaking ophthalmologist. His treatise Ten Treatises on the Eye remained the standard anatomical and clinical text in both Islamic and European medical schools for centuries.