Dr. Sahas Narain

Dr. Sumayya Ahmad is a cornea, external disease, and refractive surgery specialist at Mount Sinai. She joined the system in 2016 and cares for adults with conditions such as keratoconus, dry eye, and cataracts, offering medical therapy and advanced surgical options when needed. Patients value her clear communication and the time she takes to explain choices so they can decide on care that fits their vision needs and daily life. Dr. Ahmad earned her MD from the Yale School of Medicine, completed an internal medicine internship at Mount Sinai West/Morningside, and trained in ophthalmology at the Wilmer Eye Institute at Johns Hopkins. She then pursued fellowship training in Cornea and External Diseases at the Bascom Palmer Eye Institute. She is board-certified by the American Board of Ophthalmology, serves as an Associate Professor at the Icahn School of Medicine at Mount Sinai, and speaks English, Punjabi, Urdu, and Spanish. Her clinical research explores trends in myopia, astigmatism, and ocular surface disease.

Dr. Jerry Hsu is a cornea and cataract specialist at ColumbiaDoctors and the Edward S. Harkness Eye Institute. He combines meticulous diagnostics with advanced surgical options to help patients see more comfortably and clearly. From first visits to post-op care, he explains imaging, risks, and recovery in straightforward terms so people can make informed choices about treatment. Dr. Hsu completed ophthalmology residency at the New York Eye and Ear Infirmary of Mount Sinai and fellowship training at the Bascom Palmer Eye Institute, University of Miami. His clinical interests include cataract surgery, corneal transplantation, corneal cross-linking, and laser vision correction. He also treats pterygium and a broad range of corneal disorders in collaboration with optometry and other specialists. He welcomes patients seeking second opinions or a careful plan for complex corneal disease.

Dr. Nataliya Antonova is a board-certified ophthalmologist who cares for patients with both routine and complex eye concerns. She offers advanced cataract surgery tailored to each patient’s visual goals, as well as surgical care for corneal disease and pterygium. Patients appreciate her calm, thorough style and the time she takes to explain options in clear, everyday language so they can choose what feels right for them. A former chief resident at SUNY Downstate, Dr. Antonova completed fellowship training in Cornea, External Disease, and Refractive Surgery at the Illinois Eye and Ear Infirmary. Her practice also includes comprehensive eye care—glaucoma management, diabetic eye exams, and in-office laser procedures—so patients can receive continuity of care without extra trips. Whether you’re exploring premium lens options, seeking relief from dry, irritated eyes, or considering corneal transplant, she focuses on safe, evidence-based care and outcomes that support the way you live and work.