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Scientists > Eastern Era
Jabir Bin Hayyan
Uncle Shine
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The Bulletin of the World Health Organization (WHO), May 1970, pays tribute to him by stating: "His writings on smallpox and measles show originality and accuracy, and his essay on infectious diseases was the first scientific treatise on the subject."
Abu Bakr Muhammad Ibn Zakariya Ar-Razi,  because of his eagerness for knowledge, he became more interested in the study of alchemy and chemistry, philosophy, logic, mathematics and physics.
Ar-Razi was a pioneer in many areas of medicine and treatment and the health sciences in general. In particular, he was a pioneer in the fields of pediatrics, obstetrics and ophthalmology. In medicine, his contribution was so significant that it can only be compared to that of Ibn Sina.
Ar-Razi was the first to give an account of the operation for the extraction of a cataract and also the first scientist to discuss the pupillary reaction or the widening and narrowing of the pupil of the eye. He explained that the reaction was due to the presence of small muscles which act according to the intensity of light.
Ar-Razi was a prolific author, who has left monumental treatises on numerous subjects. He has more than two hundred outstanding scientific contributions to his credit, out of which about half deal with medicine and twenty-one on Alchemy. He also wrote on physics, mathematics, astronomy and optics, but these writings could not be preserved.
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