title: Assessment of vitreous incarceration in sclerotomies with OCT, ultrasound biomicroscopy, and direct visualization.
abstract: OBJECTIVE
  To compare anterior-segment optical coherence tomography (AS-OCT), ultrasound biomicroscopy (UBM), and direct visualization for detecting vitreous incarceration in sutureless sclerotomies.
  
  
  METHODS
  Prospective, randomized, and observer-masked experimental study in which 23-gauge vitrectomy was performed in pig eyes. Postoperative incisional vitreous incarceration was evaluated by AS-OCT, UBM, and direct visualization.
  
  
  RESULTS
  One hundred eighteen pig eyes were included. Vitreous entrapment was found in 7.9% (28 of 354), 59.6% (211 of 354), and 95.5% (338 of 354) of the sclerotomies analyzed by AS-OCT, UBM, and direct visualization, respectively. Direct visualization was the most sensible method for identifying incisional vitreous when compared with UBM and AS-OCT (P < .0001). In turn, UBM was superior to AS-OCT for observing vitreous incarceration (P < .0001).
  
  
  CONCLUSIONS
  Direct visualization is the most effective method for detecting vitreous entrapment. Regarding the imaging techniques, UBM was superior to AS-OCT for identifying vitreous incarceration.
authors.affiliation: Department of Ophthalmology, University Hospital Principe de Asturias, Alcalá de Henares, Madrid, Spain. llguajardo@icam.es
authors.forename: Lorenzo
authors.initials: L
authors.lastname: Lopez-Guajardo
authors.forename: Javier
authors.initials: J
authors.lastname: Benitez-Herreros
authors.forename: Cristina
authors.initials: C
authors.lastname: Camara-Gonzalez
authors.forename: Agustin
authors.initials: A
authors.lastname: Silva-Mato
mesh_terms: D000818:Animals; D000869:Anterior Eye Segment; D004195:Disease Models, Animal; D033401:Microscopy, Acoustic; D011446:Prospective Studies; D013552:Swine; D041623:Tomography, Optical Coherence; D014821:Vitrectomy; D014822:Vitreous Body / Q000601:surgery / Q000648:ultrastructure*