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Medical Advisory Board

Dr. Ana Carolina Victoria

Dr. Victoria is an expert in Oculofacial Plastic and Reconstructive Surgery, specializing in aesthetic, functional, and reconstructive procedures for the face, eyelids, orbits, and lacrimal system. She completed her ophthalmology residency at Montefiore Medical Center in New York as chief resident and is Board-certified by the American Board of Ophthalmology. Dr. Victoria further trained in Craniofacial Plastic and Reconstructive Surgery at Miami Children’s Hospital and pursued an ASOPRS fellowship at Sinai Hospital of Baltimore, focusing on eyelid, orbital, and facial cosmetic surgeries. Since relocating to South Florida in 2014, she has been committed to underserved communities through medical missions in countries like India and Colombia. Dr. Victoria offers a range of personalized surgical and non-surgical treatments and is known for her thorough patient education.


Dr. Harinder S. Chahal

Dr. Chahal specializes in cosmetic and reconstructive surgery of the eyelids, face, and neck. After spending years learning precise microsurgical techniques on the eye, he completed a two-year fellowship in oculofacial plastic surgery at The University of Iowa, widely regarded as a premier center for oculofacial training. He is a fellow of the prestigious American Society of Oculofacial Plastic and Reconstructive surgeons (ASOPRS), and in October 2021 was also inducted as a fellow of the American College of Surgeons (F.A.C.S.). Dr. Chahal is the only surgeon in central California who is double board certified by the American Board of Ophthalmology and the American Board of Facial Cosmetic Surgery. He also remains actively involved in teaching surgeons-in-training as a faculty member at the UC Davis School of Medicine — with a dual appointment in the departments of Otolaryngology – Head and Neck Surgery, and Ophthalmology.


Dr. Deborah Gess Ristvedt

Dr. Ristvedt is a board-certified eye surgeon with a distinguished ophthalmology legacy from her grandfather Lowell Gess and father Timothy Gess. Joining the Vance Thompson Vision team in 2018, she specializes in advanced cataract surgery, glaucoma care, and oculoplastic surgery. Dr. Ristvedt emphasizes patient involvement, tailoring treatment plans for the best restorative outcomes, and also offers a range of laser skin treatments to complement her surgical work. She completed her education at Westmont College and the Des Moines and Michigan State University Colleges of Osteopathic Medicine, with residency at Genesys Regional Medical Center. Passionate about research, Dr. Ristvedt participates in clinical trials, speaks at national meetings, and contributes to ophthalmology journals.


Dr. Francisco Castillo 

Dr. Francisco Castillo is a fellowship-trained Oculoplastics Specialist and certified ASOPRS member. He completed this ophthalmology residency at the Mayo Clinic College of Medicine, Rochester, MN, and his fellowship at the Wayne State University School of Medicine in Detroit, MI as well as a fellowship with the American Society of Ophthalmic Plastic & Reconstructive Surgery (ASOPRS). Dr. Castillo practices ophthalmic plastic and reconstructive surgery at EyeHealth Northwest in Portland, OR.


Dr. Andrew A. Kao

Andrew A. Kao, MD is a board-certified ophthalmologist at Empire Eye and Laser Center in Bakersfield, CA, where he has practiced since 2016. After completing his residency at the prestigious New York Eye and Ear Infirmary in Manhattan, Dr. Kao pursued a fellowship in ocular pathology at Bascom Palmer Eye Institute in Miami, FL—the nation’s top-ranked eye hospital. He further specialized with a year-long fellowship in ocular oncology at UC San Francisco, gaining expertise in the treatment of ocular surface and intraocular tumors while also teaching cataract surgery to residents. Dr. Kao is dedicated to providing cutting-edge ophthalmologic care in his hometown, where he has successfully performed thousands of sight-restoring surgeries.


Dr. Zac Keenum

Dr. Keenum is a skilled oculoplastic surgeon known for blending science and artistry in eye and face plastic surgery. He employs innovative techniques and advanced technology to deliver excellent patient care. Before joining Vance Thompson Vision, Dr. Keenum completed a two-year ASOPRS Fellowship at the University of Texas Southwestern in Dallas, TX, gaining extensive experience in eyelid and eye socket surgeries. He also leads Kalon Medical Spa in Sioux Falls, offering laser skin treatments that complement his surgical practice. Dr. Keenum holds degrees from Auburn University and the University of Alabama School of Medicine, and he completed his residency and fellowship at the University of Texas Southwestern Medical Center.


Dr. Richard Roth

Dr. Richard Roth is a highly accomplished Oculofacial plastic surgeon, renowned for his dual Board Certification in ophthalmology and plastic surgery, which distinguishes him as one of the few in the country with this expertise. Specializing in eyelid and facial surgery, he is a valued member of the American Society of Ophthalmic Plastic and Reconstructive Surgeons. Dr. Roth also excels in non-surgical, minimally invasive treatments, including Botox®, facial fillers, and laser skin rejuvenation. After graduating with honors from the Philadelphia College of Osteopathic Medicine, he was commissioned as an officer in the US Army, where he completed his internship and served as a Flight Surgeon, earning the title of US Army Aeromedical Flight Surgeon of the Year for his outstanding contributions.