Dr. Ahmad Al Moujahed

Ophthalmology

Stanford, CA

Ahmad Al-Moujahed, MD, PhD, MPH, is a retina specialist with additional expertise in inherited retinal degenerations (IRDs). He provides medical and surgical care for retinal and macular disease and offers thoughtful counseling about diagnostics, treatment options, and participation in appropriate clinical trials for IRDs. Patients value his clear explanations and the time he spends aligning care with each person’s visual goals. Dr. Al-Moujahed completed ophthalmology residency at Stanford University, followed by vitreoretinal surgery and IRD fellowships at Harvard’s Massachusetts Eye and Ear. He also completed a retina research fellowship at Massachusetts Eye and Ear and holds a PhD from Boston University and an MPH from Northeastern University. His clinical and research focus includes retinal and macular diseases, IRDs, and vitreoretinal surgery.

Dr. Giovanni Greaves

Ophthalmology

Los Angeles, CA

Dr. Giovanni H. Greaves is a board-certified, fellowship-trained ophthalmologist specializing in cataract surgery and medical retina. He cares for a wide range of retinal conditions—including age-related macular degeneration, diabetic retinopathy, retinal vein occlusions, vitreous floaters, and inherited retinal diseases—and also performs pterygium excision. Dr. Greaves is known for communicating clearly about diagnosis and options, and for tailoring treatment plans that balance vision, safety, and lifestyle. He earned his medical degree from the Perelman School of Medicine at the University of Pennsylvania, completed ophthalmology residency at Northwell Health (formerly North Shore–LIJ) where he served as chief resident, and pursued a medical retina fellowship at UCLA through the Jules Stein and Doheny Eye Institutes. From preventive care to ongoing injection therapy and surgical management when needed, Dr. Greaves partners closely with patients to preserve sight and quality of life.

Dr. Changyow Kwan

Ophthalmology

Irvine, CA

Dr. Changyow C. Kwan is an ophthalmologist with fellowship training in glaucoma who provides comprehensive eye care for adults. She sees patients through Optic Eye Care and Huntington Hospital, offering evaluation and ongoing management for common and complex eye conditions, with a particular focus on diseases that affect the optic nerve and eye pressure. Dr. Kwan earned her medical degree from the Feinberg School of Medicine, then completed a transitional internship at Ascension Resurrection Hospital. She went on to ophthalmology residency at UC Irvine Medical Center, followed by a glaucoma fellowship at UC Irvine. This training equipped her with expertise in medical, laser, and surgical options for glaucoma as well as cataract care in patients with coexisting disease. Dr. Kwan is known for a thoughtful, detail-oriented approach. She takes time to explain test results and treatment choices so patients can participate actively in protecting their vision.