Division of Gastroenterology, Hepa-tology and Nutrition, The University of Texas Medical School, Houston, TX 77030, United States;
Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, United States;
Department of Gastroen-terology, Stanford University, Stanford, California, CA 94305, United States;
Third Eye Retroscope; Screening colonoscopy; Adenoma detection rate; Polyp detection rate; Additional adenoma detection rate; Additional polyp detection rate;