Cataract of the eyes, a disease leading to blindness, was treated in ancient Rome. In 29 CE in De Medicinae, in the work of the Roman encyclopedist Aulus Cornelius Celsus, you can find a way to treat this disease. We also have evidence of numerous operations on the eyeball under the Romans.
As it turns out, the Romans had a very large knowledge of the structure of the eyeball, which is proved by the notes of Celsus. After the procedure, the doctor recommends making a compress of soft wool soaked in egg white.