Dr. Giovanni Greaves

Dr. Dagny Zhu is a fellowship-trained ophthalmologist specializing in cornea, refractive, and cataract surgery. She offers laser vision correction and advanced lens options, including EVO Implantable Contact Lens (ICL) and custom lens replacement, and she performs corneal transplantation and other anterior-segment procedures to restore and protect vision. A Southern California native, Dr. Zhu earned her undergraduate degree at UCLA and her medical degree at Harvard Medical School, where she conducted research in corneal immunology at Massachusetts Eye and Ear. She completed ophthalmology residency at the Doheny Eye Institute/University of Southern California (USC) & Los Angeles County Medical Center and advanced fellowship training in cornea and refractive surgery at Bascom Palmer Eye Institute. Dr. Zhu serves as Medical Director and Partner of NVISION Eye Centers and holds a clinical faculty appointment at Western University. Fluent in Mandarin, Shanghainese, and Spanish, she focuses on clear communication and individualized surgical planning so patients feel informed and confident about their options.

Kathryn Lewis, MD, is a board-certified comprehensive ophthalmologist serving patients at Acuity Eye Group in Orange County. She offers thoughtful, approachable care for routine and complex eye problems, with particular expertise in cataract surgery and the medical management of chronic conditions like dry eye, glaucoma, and diabetic retinopathy. Dr. Lewis is known for her attentive listening and clear explanations, helping each patient understand options and feel confident in their plan. Dr. Lewis graduated with honors from UC San Diego and earned her medical degree from UC Riverside School of Medicine. She completed ophthalmology residency at UT Health San Antonio, where she gained extensive experience in complex cataract procedures, upper eyelid surgery, emergency ocular care, and a range of laser and injection treatments. Today, she brings that broad skill set to individualized, evidence-based care focused on safety, comfort, and lasting visual outcomes.

Dr. Marib Akanda is an ophthalmologist with advanced training in retinal disease and uveitis. He provides comprehensive medical and surgical care for conditions that threaten the macula and peripheral retina, and explains each step—from imaging to injections or surgery—so patients know what to expect. His approach emphasizes timely treatment, careful follow-up, and coordination with primary eye care to safeguard vision. Dr. Akanda completed an ophthalmology residency at Northwell Health, followed by a uveitis fellowship at Northwell and vitreoretinal disease and surgery fellowship training at Loma Linda University Health. He also earned his medical degree from SUNY Downstate. He enjoys teaching and welcomes questions, believing that informed patients make the best decisions for their eyesight.