（Δημοσθένης ὁ Φιλαλήθης
), a physician, who was one of the pupils of Alexander Philalethes, and belonged to the school of medicine founded by Herophilus. (Gal. De Differ. Puls.
4.4. vol. viii. p. 727.)
He probably lived about the beginning of the Christian aera, and was especially celebrated for his skill as an oculist.
He wrote a work on the Pulse, which is quoted by Galen (l.c.
), and also one on Diseases of the Eyes, which appears to have been extant in the middle ages, but of which nothing now remains but some extracts preserved by Aetius, Paulus Aegineta, and other later writer