title: Anterior segment optical coherence tomography imaging of trabeculectomy blebs before and after laser suture lysis.
abstract: OBJECTIVE
  To image trabeculectomy blebs before and after laser suture lysis (LSL) using anterior segment optical coherence tomography (AS-OCT).
  
  
  METHODS
  Prospective observational study.
  
  
  METHODS
  Blebs were imaged with a prototype of the AS-OCT (Carl Zeiss Meditec, Inc, Dublin, California, USA) before and after LSL. Blebs were assessed for bleb height, bleb wall thickness, apposition of the scleral flap to sclera, and patency of the internal ostium.
  
  
  RESULTS
  Seven blebs in eyes of seven patients were imaged. Pre-LSL, five blebs were low and two were of moderate height. After LSL, six of seven eyes (85.7%) showed an increase in total bleb height, with increased bleb wall thickness and separation of the scleral flap from sclera. In one eye, there was no discernible change in bleb height, cavity height, or wall thickness.
  
  
  CONCLUSIONS
  AS-OCT was able to demonstrate features of bleb morphology that changed after LSL.
authors: National University Hospital, Singapore.
authors: Mandeep
authors: M
authors: Singh
authors: Tin
authors: T
authors: Aung
authors: David S
authors: DS
authors: Friedman
authors: Ce
authors: C
authors: Zheng
authors: Paul J
authors: PJ
authors: Foster
authors: Winifred P
authors: WP
authors: Nolan
authors: Jovina L
authors: JL
authors: See
authors: Scott D
authors: SD
authors: Smith
authors: Paul T K
authors: PT
authors: Chew
mesh_terms: D000368:Aged; D000869:Anterior Eye Segment / Q000473:pathology*; D001768:Blister / Q000175:diagnosis*; D015812:Glaucoma, Angle-Closure / Q000601:surgery; D005902:Glaucoma, Open-Angle / Q000601:surgery; D006801:Humans; D007429:Intraocular Pressure; D053685:Laser Therapy; D011446:Prospective Studies; D012590:Sclera / Q000601:surgery; D013524:Surgical Flaps; D013536:Suture Techniques; D041623:Tomography, Optical Coherence; D014130:Trabeculectomy