Cataldo has a PhD in Biology and several years of experience in scientific research across diverse fields. After a post-doctoral position at UCLA, in the Departments of Molecular & Medical Pharmacology and Neurobiology, he moved to the Institut Pasteur and Institut de la Vision, Paris, where he studied the physiopathology of retinal photoreceptors implementing diverse microscopic techniques. He has expertise in histological and immunohistochemical preparation methods, advanced light and electron microscopy techniques, and image analysis.