Meet Dr. McMahon

Dr. Robert T. McMahon moved to Victoria, Texas, in June 1978. Prior to this relocation, he completed his ophthalmic training at St. Louis University in St. Louis, Missouri from 1970 to 1973. Following the completion of his training in ophthalmology, he studied ophthalmic pathology at the Armed Forces Institute of Ophthalmology in Washington, DC. During his time there, he performed investigative work on corneal and retinal diseases. He presented and published numerous scientific papers in these areas of study.

Form 1973 through 1975, he served his military obligation at Brooke Army Medical Center in San Antonio, Texas. During this period, he taught ophthalmology residents at this Army Medical Center and also presented seminars at other Army Medical Centers. He was also an Assistant Professor of Ophthalmology at the University of Texas at San Antonio.

Following the completion of his tenure in San Antonio, Dr. McMahon accepted a position at Yale University in New Haven, Connecticut. Scientific papers and seminars as a visiting professor to some of the best programs in America were presented. He was also asked to write a chapter in an ophthalmology textbook, which was completed during this time.

Research was also part of his duties at Yale University. He started a research project on glaucoma, studying tissue samples involved in the drainage of fluid from the human eye.

Follow these very productive years, Dr. McMahon wanted to be more involved in patient care and decided to move back to Texas after the particularly harsh winter of 1977. Coming back to Texas was like coming home, and Victoria was the location that was chosen.

His initial concerns about lack of academic stimulation were immediately laid to rest when he was invited to become a consultant for the Department of the Army, and an Associate Professor of Ophthalmology at Texas A&M University at College Station. He has served in these positions for many years.

1985 was the year that Dr. McMahon opened his dedicated ophthalmic eye surgery center in his current office location. It was one of the first of its kind in Texas. Over the years ophthalmologists from across the state have visited Dr. McMahon's surgery center, and they have patterned their eye centers after the South Texas Eye Center.

Meet Dr. McCollough

Dr. John S. McCollough graduated from the University of Houston with a Bachelor of Science degree, and a Doctorate of Optometry
in 1979.

Dr. McCollough has practiced Optometry in Victoria since 1980. He has over 40 years of experience in examination and treatment of Ocular Diseases as an Optometric Glaucoma Specialist, and as a Board Certified Diplomate of The American Board of Optometry, and the National Board of Examiners in Optometry.

Dr. McCollough thoroughly enjoys the profession of Optometry and taking care of patient's eye care needs and has encouraged several former patients to enter the profession including his own daughter. He enjoys spending his spare time with his family, exercising, traveling, and visiting his grandchildren.

Meet Dr. Carvounis

Dr. Carvounis completed his undergraduate studies at the University of Cambridge, medical school at Oxford University and then his internship in internal medicine at the Mayo Clinic, Rochester, MN, ophthalmology residency at The George Washington University, Washington, D.C. and fellowship in Diseases and Surgery of the Vitreous and Retina at Baylor College of Medicine, Houston, TX with Dr. Alice McPherson. Dr. Carvounis was recruited to the faculty at Baylor College of Medicine in 2007 and served as junior and then senior faculty as well as fellowship program director for a decade. Dr. Carvounis has received the American Academy of Ophthalmology Achievement Award and the American Society of Retina Specialists' Honor Award. Dr. Carvounis has trained over 100 ophthalmology residents and 14 retina specialists, has received the Dan B. Jones teaching award at Baylor College of Medicine and the Dr Troupe Teaching Award for Excellence at UTMB. Dr. Carvounis has published more than 60 peer- reviewed manuscripts and has taught retina specialists and ophthalmologists at national and international meetings. Dr. Carvounis is married to Dr. Sepi Carvounis and has 4 children. He is an avid tennis player, windsurfer, snowboarder, gardener who enjoys the opera and literature and travel.

  • Petros E. Carvounis, M.D., F.R.C.S.C., F.A.S.R.S. Diplomate, American Board of Ophthalmology
  • Faculty, Blanton Eye Institute, Houston Methodist Hospital
  • Clinical Associate Professor, University of Texas MD Anderson Cancer Center
  • Clinical Associate Professor, Baylor College of Medicine
  • Clinical Associate Professor, University of Texas Medical Branch
  • Clinical Professor, The George Washington University
  • President, Macula Vitreous Retina Physicians & Surgeons

Meet Dr. Chancellor

John Chancellor, MD, MS is a board-certified ophthalmologist and Assistant Professor in the Division of Vitreoretinal Diseases & Surgery. Prior to completing his vitreoretinal surgery fellowship at the Baylor College of Medicine, Dr. Chancellor finished his residency at the University of Arkansas for Medical Sciences. He obtained his medical degree from the University of Massachusetts Medical School. He also earned a Master of Science degree in Neuroscience & Behavior at the University of Massachusetts Amherst. His clinical and surgical interests include age-related macular degeneration, diabetic retinopathy, and retinal detachment repair. His research interests include surgical outcomes in diabetic retinopathy and inherited retinal diseases.

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