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Rev Gastroenterol Disord. 2009 Winter;9(1):1-6.

Third Eye Retroscope: rationale, efficacy, challenges.

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  • 1Department of Medicine, Division of Gastroenterology, Indiana University School of Medicine, Indianapolis, Indiana, USA.


The most effective colonoscopy misses polyps, and both barium enema and computed tomography colonography studies have identified hidden areas on the proximal sides of folds, flexures, and valves where colonoscopy can miss even substantially sized lesions. This article reviews the rationale, efficacy, and clinical challenges associated with one of the most promising devices for improvement of mucosal exposure during colonoscopy, the Third Eye Retroscope (Avantis Medical, Sunnyvale, CA).

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