Dr. Pennell received his BS in Biology from Baylor University. He attended medical school at Louisiana State University Medical Center, in Shreveport, LA and later interned there in the Department of Medicine. Dr. Pennell continued his training at the Scott and White Memorial Hospital, Department of Ophthalmology, completing his residency there. Subsequent to residency, Dr. Pennell underwent specialized training and certification in laser refractive surgery, with a special interest in LASIK. Dr. Pennell was certified by the American Board of Ophthalmology in 1996. He is a member of the American Academy of Ophthalmology, American Society of Cataract and Refractive Surgeons, The American College of Surgeons, The American College of Physicians, Texas Medical Association, and The American Medical Association. Dr. Pennell practices general ophthalmology emphasizing Lasik and small incision cataract surgery.