Third eye retroscope: Rationale, efficacy, challenges

Douglas K. Rex

Research output: Contribution to journalReview article

9 Scopus citations


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).

Original languageEnglish (US)
Pages (from-to)1-6
Number of pages6
JournalReviews in gastroenterological disorders
Issue number1
StatePublished - Dec 1 2009


  • Colonoscopy
  • Mucosal exposure
  • Polyps
  • Retrograde imaging

ASJC Scopus subject areas

  • Gastroenterology

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