In the ophthalmological treatises of the medieval Arabo-Islamic physicians such as al-Mawsili (9th-10th century), al-Kahhal (ca. 940-1010), Haly Abbas (10th century) and al Sadili (14th century) we may find references about ocular cancer, focusing on eyelid tumors and cancerous ulcers of the cornea. These references are similar to the analogous ones of ancient Greek physicians as these are preserved in the medical texts of the most famous Byzantine doctors, indicating the influence of ancient Greek medicine in the Arabo-Islamic one.