An eye physician who helped translate ancient Greek medical knowledge into Arabic played a key role in shaping Western medical thought, according to a new study.
The research, led by Dalal H. Al-Zubi and published in Cogent Arts & Humanities, shows how a 9th-century scholar helped preserve and reshape medical learning by carefully interpreting ancient Greek texts rather than translating them word for word.
The study focuses on Hunayn ibn Ishaq, a physician, translator, and scholar of the Abbasid era who became famous for his work on medicine, especially eye disease. Researchers say his role was central at a time when the Islamic world was translating major works from Greek, Syriac, and other languages into Arabic.
A translator who understood medicine
Hunayn was not just a language expert. He was also a trained physician and a specialist in ophthalmology. It allowed him to understand the meaning of difficult medical terms and explain them with care instead of relying on direct, word-for-word translation.
According to the research, Hunayn moved away from literal translation because it often damaged meaning. Instead, he focused on the full sense of a sentence. When he could not find an exact Arabic equivalent for a Greek medical term, he used explanation, comparison, and carefully chosen Arabic wording.
That method helped him build a scientific vocabulary in Arabic. It also made medical texts more accurate and easier for readers to follow.
Why the Abbasid era mattered
The study places Hunayn’s work inside the wider Abbasid translation movement, when Baghdad became a center of learning. During this period, rulers supported the translation of books on medicine, mathematics, astronomy, and philosophy. The House of Wisdom played a major role in that effort.
Researchers note that translation in this era was not simply about preserving older knowledge. It was also about making that knowledge usable in a new language and culture. Hunayn stood out because he reviewed translations closely, corrected errors, and worked with other specialists in different fields.
The study says this careful method helped protect the meaning of Greek medical works and supported the growth of Arabic as a language of science.
A closer look at the eye
Al-Zubi’s study pays special attention to Hunayn’s original work, In the Eye: Two Hundred and Seven Questions. Rather than studying only general claims about his importance, the research analyzes the first 50 questions in the manuscript itself.
Those pages deal with the structure of the eye, its layers, and the terms used to describe them. The study says this manuscript had not previously received this kind of detailed analysis.
An eye physician helped translate ancient Greek medicine into Arabic—shaping science for centuries.
A new study shows how Hunayn ibn Ishaq used meaning-based translation and created new medical terms to make knowledge clearer and more usable. pic.twitter.com/Zr1NU6zskm— Tom Marvolo Riddle (@tom_riddle2025) April 7, 2026
Researchers found that Hunayn explained eye anatomy in a systematic and teaching-friendly way. He described the layers of the eye, their functions, and their boundaries. He also addressed why earlier scholars disagreed about how many layers the eye has.
According to the study, Hunayn argued that many of these disagreements were about wording, not a real scientific difference.
The manuscript also shows how he formed Arabic medical terms. For example, he used descriptive language and analogy to name eye structures based on their shape or function. The study highlights terms such as those for the retina, conjunctiva, and cornea, showing how he adapted difficult Greek concepts into Arabic without losing precision.
More than a translator
The research presents Hunayn as both a translator and an original medical thinker. His work in ophthalmology did not stop at translation. He wrote his own medical text, organized it in question-and-answer form, and used it to teach complex ideas clearly.
That approach, the study says, helped later physicians and students. It also shows that translation during the Abbasid era was closely tied to scientific progress, not just language transfer.
Al-Zubi concludes that Hunayn ibn Ishaq played a major role in both the translation movement and the development of eye medicine. By choosing meaning over literal wording, and by creating new Arabic terms when needed, he helped carry ancient medical knowledge into a new intellectual world.
His work, the study argues, remains a strong example of how translation can preserve science, expand language, and shape history at the same time.
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