This blogger pays tribute the greatest Asian king and Sri Lankan King Ravana, it is fascinating to note that Ravana was considered to be the greatest physician even in the days were no formal science or medicine existed?.
He is said to be one of the greatest physicians who ever existed, and even authored the book Arka Prakashaya.
The Bisajjya Grantha and Nadi Shasthra mentions that King Ravana and his grandfather Pulasthi Muni had graced the world-famous medical conferences held in those ancient days in Janasthan Pura near Pakistan. In Sri Lankan folk tales, it is said that king Ravana treated both Rama and Lakshmana with his own hand when they were badly injured on the battlefield.
- http://chathuranga.blogspot.com/2008/05/maha-ravana.html