Dr. Maria Castanos Toral

Ophthalmology – Retina Specialist

Sarasota, FL

Dr. Maria Castaños is a medical retina specialist dedicated to diagnosing and treating conditions that affect the macula and retina. She earned her MD at Universidad Iberoamericana (UNIBE) and completed an ophthalmology residency at the New York Eye and Ear Infirmary of Mount Sinai, followed by a fellowship in medical retina at the same institution. Her background also includes a retinal imaging research fellowship, which informs her evidence-based approach and careful use of advanced diagnostics. At Shane Retina, Dr. Castaños cares for adults with age-related macular degeneration, diabetic retinopathy, retinal vein occlusions, uveitis, and other complex retinal diseases. She emphasizes clear communication, thoughtful treatment planning, and close coordination with referring doctors. Patients appreciate her calm, thorough manner and her commitment to personalized care using the latest therapies and imaging technologies.

Dr. Matthew Donovan

Ophthalmology – Retina Specialist

Clearwater, FL

Dr. Matthew Donovan is a retina specialist with fellowship training in medical retina at the Bascom Palmer Eye Institute. He completed ophthalmology residency at SUNY Downstate after earning his MD at the University of Miami Miller School of Medicine, and holds a BS from the University of Miami. His background includes research and presentations on retinal imaging and emerging treatments for macular disease. Dr. Donovan cares for adults with macular degeneration, diabetic retinopathy, retinal vascular disease, and inflammatory conditions. He uses advanced diagnostics, intravitreal therapies, and laser when indicated, and is known for his approachable communication style and careful follow-up.

Dr. Hong-Uyen Hua

Ophthalmology – Retina Specialist

Miami, FL

Dr. Hong-Uyen Hua is a vitreoretinal surgeon who cares for both adult and pediatric patients with medical and surgical diseases of the retina and vitreous. She is committed to thoughtful, team-based care and enjoys guiding families through complex conditions with clear communication and evidence-based treatment plans. Dr. Hua’s interests include age-related macular degeneration, inherited retinal dystrophies, and diabetic eye disease, and she integrates advanced imaging and, when appropriate, genetic testing into personalized care. After earning her medical degree at the University of Miami Miller School of Medicine, Dr. Hua completed an ophthalmology residency at the USC Roski Eye Institute and a fellowship in vitreoretinal surgery at the Cleveland Clinic Cole Eye Institute. She values innovation and education, has presented and published on retinal disease, and prioritizes access to high-quality care across all ages. Patients appreciate her calm, collaborative style and her focus on restoring and protecting vision over the long term.