Anton von Rosas (23 December 1791 – 31 May 1855) was an Austrian ophthalmologist born in Pécs, Hungary.
He studied medicine at the Universities of Pest and Vienna, earning his doctorate in 1814.
Among his written works was a three volume ophthalmological textbook titled Handbuch der theoretischen und practischen Augenheilkunde.
A street in the Meidling district of Vienna called Rosasgasse is named in his honor.
Schopenhauer made this claim in two of his books: On Vision and Colors, § 1, and On the Will in Nature, "Physiology and Pathology."