Salah Al-Din ibn Yusuf Al-Kahhal bi-Hama
Salah Al-Din ibn Yusuf Al-Kahhal bi-Hama (i.e. the eye doctor of Hama) was a Syrian oculist who flourished in Hama in 1296. He wrote for his son a very elaborate treatise of ophthalmology entitled Nur al-Uyun wa Jami al-Funun (Light of the Eyes and Collection of Rules).
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