1. Department of Medical Physiology, Scott & White Healthcare, College of Medicine, Texas A&M Health Science Center, Temple, Texas
2. Departments of Surgery and Ophthalmology, Scott & White Healthcare, College of Medicine, Texas A&M Health Science Center, Temple, Texas
3. Department of Medical Physiology, Scott & White Healthcare, College of Medicine, Texas A&M Health Science Center, Temple, Texas 2Departments of Surgery and Ophthalmology, Scott & White Healthcare, College of Medicine, Texas A&M Health Science Center, Temp