He completed two fellowships, one in vitreoretinal surgery and retinal diseases and one in ocular oncology and orbital disease. He leads the Pediatric Vitreoretinal Surgery service and Stanford and founded the Stanford University Network for Diagnosis of Retinopathy of Prematurity (SUNDROP) telemedicine screening initiative, which utilizes RetCam II cameras to provide remote screening of retinopathy of prematurity. SUNDROP is currently the largest telemedicine network for ROP in the North America. He is Co-Director of Ocular Oncology.