Collection : musée Fragonard de l'École nationale vétérinaire de Maisons-Alfort / Photo Olivier Jourdanet / MCC

Coloured plaster cast of the head of a one-eyed foal

Cyclopia is the fusion of both eyes into one or, as in this foal, into a single orbit containing two eyes. This lethal malformation is related to the lack of development of the forebrain.