Career
He subsequently worked at the Hôpital des Enfants-Malades, Hôpital Saint-Antoine and the Hôpital Lariboisière. From 1877 until 1895, he was associated with the Hôpital Beaujon in Paris. In 1855 he identified a disorder characterized by unilateral softening of the brain caused by obstruction of the blood vessels of the pons.
The condition was to become known as "Millard-Gubler syndrome", named in conjunction with Adolphe-Marie Gubler, who described the syndrome in a paper published in 1856.