Our Doctors

John Fang, M.D.

Doctor John Fang, M.D. Dr. John Fang earned his medical degree from Vanderbilt University, after receiving Bachelor of Science degrees in both Biomedical Engineering and Chemical Engineering from Johns Hopkins University, graduating with general and departmental honors. At the Mayo Clinic, he completed an internship in medicine and a residency in ophthalmology, and served as co-chief resident in his final year. A subsequent fellowship in cornea, anterior segment, and refractive surgery at Baylor College of Medicine further refined his surgical skills. Throughout his training, Dr. Fang has received numerous awards including the Gill Scholarship for Ophthalmology Research and the National Eye Institute Fellowship award. He is board-certified by the American Board of Ophthalmology and is a fellow of the American Academy of Ophthalmology. He is also a member of the American Society of Cataract and Refractive Surgery and Tau Beta Pi Engineering Honor Society. Prior to joining Miramar Eye Specialists, Dr. Fang was an attending ophthalmologist at the Dean McGee Eye Institute, the Department of Ophthalmology for the University of Oklahoma, where he helped educate and train new residents and fellows.

Dr. Fang specializes in medical and surgical treatment of diseases affecting the cornea of the eye, cataract and intraocular lens implant surgery, and refractive laser surgery such as LASIK and PRK. He also has a particular interest in cornea transplantation, ocular surface disorders, dry eye syndrome, contact lens intolerance, and surgical correction of myopia, hyperopia, regular and irregular astigmatism. He is delighted to share his expertise in cornea, cataract, and refractive care with the Ventura County community. Dr. Fang speaks Mandarin and Basic Spanish.

Dr. Fang’s Selected Publications:

  • Fang JP, Amesur KB, Baratz KH. Pre-existing endothelial abnormalities in bilateral postoperative Descemet membrane detachment. Arch Ophthalmol 2003;121:903-904.
  • Fang JP, Baratz KH, Hodge DO. Trends in the incidence rate of cataract extraction in Olmsted County, Minnesota. Presented at: Association for Research in Vision and Ophthalmology Annual Meeting. Ft. Lauderdale, FL, May, 2003
  • Fang JP, Baratz KH. Comparison between fibrin glue and sutures to attach preserved human amniotic membranes to rabbit corneas. Presented at: Association for Research in Vision and Ophthalmology Annual Meeting. Ft. Lauderdale, FL, April, 2004
  • Fang JP, Hill W, Wang L, Chang V, Koch DD. (2006) Advanced IOL calculations. In: Kohnen T, Koch DD, eds. Cataract and Refractive Surgery. 2nd ed. Berlin, Germany: Springer.
  • Fang JP, Hamill MB. Early visual results after Descemet’s stripping posterior lamellar keratoplasty for Fuch’s endothelial dystrophy. Presented at: The American Society of Cataract and Refractive Surgery Symposium & Congress. San Francisco, CA, March, 2006
  • Fang JP, Wang L, Koch DD. Effect of iris registration on visual outcome. Presented at: The American Society of Cataract and Refractive Surgery Symposium & Congress. San Francisco, CA, March, 2006
  • M. Gene Matzkin, M.D.

    Dr M Gene Matzkin | Ophthalmologist Thousand Oaks CA | Ventura County CA

    Dr. Matzkin graduated from the UCLA School of Medicine and received his ophthalmology training at UCLA’s Jules Stein Eye Institute and Harbor General Hospital. He then entered the U.S. Navy and as a Lieutenant Commander, was the sole ophthalmologist on Guam for two years. Since 1974, he has been in private practice with the Lynn Eye Medical Group, primarily interested in general ophthalmology with a focus in cataract surgery.

    He has been active in teaching eye surgery, and since 1990 has been Associate Clinical Professor of Ophthalmology at the Jules Stein Eye Institute, receiving the UCLA Department of Ophthalmology Senior Honor Award in 2000.

    Roy T. Butera, M.D.

    Dr Roy Butera | Ophthalmologist Thousand Oaks CA | Ventura County CA


    Dr. Roy Butera is a board-certified ophthalmologist specializing in comprehensive care, with a special interest in cataract surgery and intraocular lens implants. Dr. Butera practices in Thousand Oaks and provides a full spectrum of ophthalmic services for adults and children over ten years of age, including routine evaluations, glasses, contact lenses, eye diseases and surgery.

    Dr. Butera graduated summa cum laude from the University of Illinois in biologic sciences. He received his medical degree from Northwestern University, where he was elected to the Alpha Omega Alpha Medical Scholastic Honorary. Dr. Butera then completed his internship at Mercy Hospital and Medical Center, and residency training at the University of Wisconsin Center for Health Sciences, where he served as chief resident.

    In addition to his training, Dr. Butera also participated in a clinical research project in fluorescein angiography at Northwestern University, co-authored several medical publications, and completed a clinical preceptorship at Guy’s Hospital in London, England. He is a Fellow of the American Academy of Ophthalmology.


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