Photinos Panas (30 January 1832 – 5 January 1903) was an ophthalmologist born on the Greek island of Cefalonia.
In 1860 he obtained his medical degree at Paris, where he would later spend his entire medical career. He was the first professor of ophthalmology at the University of Paris, and in 1879 established the ophthalmology clinic at the Hôtel-Dieu de Paris. In 1881 with Edmund Landolt (1846-1926) and Antonin Poncet (1849-1913), he founded the Archives d'ophtalmologie.
In 1894 he published Traité des maladies des yeux, which at the time was considered to be the best French textbook on eye diseases. Panas is credited with introducing an operation for entropion in trichiasis, as well as an operation for attachment of the upper eyelid to the occipitofrontalis muscle for treatment of blepharoptosis. Each of these techniques are sometimes referred to as "Panas' operation" in medical literature.