Find a Specialist
- Ophthalmology

Dr. Robi Maamari
Oculofacial Surgeon
Saint Louis, MODr. Maamari is an ophthalmologist specializing in oculofacial plastic and reconstructive surgery, caring for patients with eyelid, tear-duct, and orbital conditions. His clinical focus includes eyelid and orbital diseases, eyelid malpositions such as ptosis, ectropion, and entropion, thyroid eye disease, and reconstruction after trauma. He also offers care for eyelid lesions and skin cancers, as well as treatment for blepharospasm and hemifacial spasm. He completed ophthalmology residency training at Washington University in St. Louis School of Medicine and pursued fellowship training in oculofacial plastic and reconstructive surgery. He earned his medical degree from the University of California, Irvine School of Medicine, and completed a research fellowship through UC San Francisco/Research to Prevent Blindness. Dr. Maamari’s approach prioritizes function, comfort, and appearance, with careful planning and clear communication about options, recovery, and expected outcomes.
- Ophthalmology

Dr. Michael Chappell
Oculofacial Surgeon
Kansas City, MODr. Michael C. Chappell is a board-certified ophthalmologist who focuses on oculoplastics—cosmetic and reconstructive surgery of the eyelids and the tissues around the eyes. He provides care for concerns involving the eyelids, the tear drainage system, and the bones and soft tissues of the orbit, combining attention to detail with an emphasis on both function and natural appearance. After earning his medical degree at the University of Arkansas for Medical Sciences, Dr. Chappell completed ophthalmology residency training at California Pacific Medical Center in San Francisco and then a two-year, ASOPRS-accredited oculofacial plastic and reconstructive surgery fellowship at the University of Washington in Seattle. His fellowship research received the Marvin H. Quickert Thesis Award. In the clinic, Dr. Chappell works closely with patients to understand goals, explain options clearly, and develop a plan that fits their needs—whether the priority is comfort, vision protection, or facial aesthetics.
- Ophthalmology

Dr. Christine Ryu
Oculofacial Surgeon
Saint Louis, MODr. Christine Ryu is an ophthalmologist specializing in oculofacial plastic and reconstructive surgery. As an Oculoplastics Fellow at Washington University in St. Louis, she cares for patients with conditions that affect the eyelids, orbit, and tear drainage system. Her approach combines meticulous surgical technique with a clear, compassionate explanation of options so people can make informed decisions about their vision and appearance. She welcomes patients seeking help for functional concerns like eyelid droop or tearing as well as those exploring cosmetic eyelid procedures. Dr. Ryu completed medical school at the Keck School of Medicine of USC and ophthalmology residency at the University of Nebraska Medical Center. She earned her undergraduate degree at Dartmouth College. In fellowship at WashU, she receives advanced training in reconstructive procedures after skin cancer, thyroid eye disease, and lacrimal surgery. Whether a patient needs a minor in-office repair or complex reconstruction, she aims to deliver safe, natural-looking results and smoother recovery with a personalized care plan.
- Ophthalmology

Dr. Maria Valenzuela Arellano
Oculofacial Surgeon
Columbia, MODr. M. Alejandra Valenzuela is a board-certified ophthalmologist with multiple fellowship training and more than 25 years of experience caring for children and adults with eyelid, tear-duct, and orbital (eye socket) problems. She provides evaluation and surgical and nonsurgical treatment for eyelid drooping, tear-duct obstruction and watery eyes, orbital disease and tumors, and complex reconstruction after trauma or after skin-cancer treatment around the eye. Dr. Valenzuela also offers eyelid and brow rejuvenation procedures, rehabilitation for facial palsy, and orbital decompression with eyelid reconstruction for patients with Graves’ disease. She chose medicine to support people during vulnerable moments, and she aims to treat every patient like family while focusing on each person’s best interests. Outside the clinic, she enjoys time with her family, cooking, skiing, and being outdoors.
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