title: Optical coherence tomography assessment of angle anatomy changes after cataract surgery.
abstract: OBJECTIVE
  To evaluate changes in anterior chamber (AC) morphology induced by cataract extraction using anterior segment optical coherence tomography (OCT).
  
  
  METHODS
  Prospective comparative observational case series.
  
  
  METHODS
  Thirty-two eyes of 32 patients underwent OCT imaging of the angle before and after cataract surgery. Anterior chamber depth (ACD), angle opening distance at 500 microm (AOD(500)) and trabecular-iris space at 500 microm (TISA(500)) were measured pre- and postoperatively. Preoperative lens thickness (LT) and lens position (LP) were calculated.
  
  
  RESULTS
  ACD, AOD(500), and TISA(500) increased significantly after cataract extraction (P < .001). Preoperatively, ACD and LT highly correlated (P = .0083) as did ACD and TISA(500) (P = .0001). TISA(500) correlated with LP (P = .0001) but not with LT (P = .74).
  
  
  CONCLUSIONS
  Changes in angle morphology after cataract surgery can be imaged and objectively quantified by anterior segment OCT. Lens position may have a greater influence on angle width than LT.
authors.affiliation: Doheny Eye Institute and the Department of Ophthalmology, Keck School of Medicine of the University of Southern California, Los Angeles, California, USA.
authors.forename: Farnaz
authors.initials: F
authors.lastname: Memarzadeh
authors.forename: Maolong
authors.initials: M
authors.lastname: Tang
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.forename: Vikas
authors.initials: V
authors.lastname: Chopra
authors.forename: Brian A
authors.initials: BA
authors.lastname: Francis
authors.forename: David
authors.initials: D
authors.lastname: Huang
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000867:Anterior Chamber / Q000473:pathology*; D002387:Cataract Extraction; D005260:Female; D006801:Humans; D007498:Iris / Q000473:pathology*; D019654:Lens Implantation, Intraocular; D007908:Lens, Crystalline / Q000473:pathology; D008297:Male; D008875:Middle Aged; D011182:Postoperative Care; D011446:Prospective Studies; D041623:Tomography, Optical Coherence / Q000379:methods*; D014129:Trabecular Meshwork / Q000473:pathology*