Dr. Oscar Cruz treats pediatric and adult patients for conditions and diseases related to the eyes. He offers surgery for adults with moderate to severe strabismus (crossed eyes, diplopia), and cares for children with moderate to severe amblyopia (poor sight) by occlusion therapy and/or pharmacologic therapy.

His research includes work with the Pediatric Eye Disease Investigative Group (PEDIG) to study amblyopia and esotropia.

Dr. Cruz is a professor of ophthalmology, Anwar Shah Endowed Chair in Ophthalmology, and professor of pediatrics in the Department of Ophthalmology at Saint Louis University School of Medicine.

He is a member of the Association of University Professors of Ophthalmology, the American Academy of Ophthalmology, the American Association for Pediatric Ophthalmology and Strabismus, and is involved in the Delta Gamma Center for Children with Visual Impairment (St. Louis).

Dr. Cruz is a triathlete and a past participant in the Boston Marathon.