title: Effect of endocyclophotocoagulation on refractive outcomes in angle-closure eyes after phacoemulsification and posterior chamber intraocular lens implantation.
abstract: OBJECTIVE
  To compare postoperative refractive outcomes in angle-closure eyes having phacoemulsification and intraocular lens (IOL) implantation with or without endocyclophotocoagulation (ECP).
  
  
  METHODS
  Single tertiary-level ophthalmology practice.
  
  
  METHODS
  Retrospective comparative study.
  
  
  METHODS
  Primary angle-closure suspect (PACS), primary angle-closure (PAC), or primary angle-closure glaucoma (PACG) eyes that had phacoemulsification and IOL implantation with or without ECP from 2012 to 2014 were studied. Clinical data collected included axial length (AL), minimum and maximum keratometry (K) values, corneal powers, anterior chamber depth (ACD), corneal white-to-white (WTW), implanted IOL power, and postoperative manifest refraction. The Holladay 1 formula was used for IOL calculations. Primary and secondary outcome measures were the mean absolute error (MAE) and mean arithmetic error, respectively.
  
  
  RESULTS
  Sixty-eight eyes with ECP and 71 eyes without ECP were included. There were no statistically significant differences between the 2 groups in age, sex, eye side, ethnicity, AL, minimum or maximum keratometry values, ACD, WTW, or implanted IOL power. The MAE was lower in the non-ECP group (0.47 ± 0.32D versus 0.62 ± 0.43D; P = .0285). The mean arithmetic error showed a more myopic result in the ECP group (-0.54 ± 0.53D versus -0.26 ± 0.52D; P = .0017).
  
  
  CONCLUSIONS
  In this study, patients with PACS, PAC, or PACG having phacoemulsification and IOL implantation with ECP had decreased predictability of the postoperative refraction and a small myopic shift compared with those without ECP.
  
  
  BACKGROUND
  Dr. Ahmed is a consultant to Alcon, Advanced Medical Optics, Bausch & Lomb, and Carl Zeiss. None of the other authors has a proprietary or financial interest in any material or method mentioned.
authors.affiliation: From the Department of Ophthalmology and Vision Sciences (Wang, Campos-Möller, Ahmed), University of Toronto, Toronto, Ontario, Canada; Kellogg Eye Center (Shah), University of Michigan, Ann Arbor, Michigan, USA; Department of Ophthalmology and Visual Sciences (Sheybani), Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA; Trillium Health Partners (Ahmed), Mississauga, Ontario, Canada; Credit Valley EyeCare (Ahmed), Mississauga, Ontario, Canada.
authors.forename: Jay Ching-Chieh
authors.initials: JC
authors.lastname: Wang
authors.affiliation: From the Department of Ophthalmology and Vision Sciences (Wang, Campos-Möller, Ahmed), University of Toronto, Toronto, Ontario, Canada; Kellogg Eye Center (Shah), University of Michigan, Ann Arbor, Michigan, USA; Department of Ophthalmology and Visual Sciences (Sheybani), Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA; Trillium Health Partners (Ahmed), Mississauga, Ontario, Canada; Credit Valley EyeCare (Ahmed), Mississauga, Ontario, Canada.
authors.forename: Xavier
authors.initials: X
authors.lastname: Campos-Möller
authors.affiliation: From the Department of Ophthalmology and Vision Sciences (Wang, Campos-Möller, Ahmed), University of Toronto, Toronto, Ontario, Canada; Kellogg Eye Center (Shah), University of Michigan, Ann Arbor, Michigan, USA; Department of Ophthalmology and Visual Sciences (Sheybani), Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA; Trillium Health Partners (Ahmed), Mississauga, Ontario, Canada; Credit Valley EyeCare (Ahmed), Mississauga, Ontario, Canada.
authors.forename: Manjool
authors.initials: M
authors.lastname: Shah
authors.affiliation: From the Department of Ophthalmology and Vision Sciences (Wang, Campos-Möller, Ahmed), University of Toronto, Toronto, Ontario, Canada; Kellogg Eye Center (Shah), University of Michigan, Ann Arbor, Michigan, USA; Department of Ophthalmology and Visual Sciences (Sheybani), Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA; Trillium Health Partners (Ahmed), Mississauga, Ontario, Canada; Credit Valley EyeCare (Ahmed), Mississauga, Ontario, Canada.
authors.forename: Arsham
authors.initials: A
authors.lastname: Sheybani
authors.affiliation: From the Department of Ophthalmology and Vision Sciences (Wang, Campos-Möller, Ahmed), University of Toronto, Toronto, Ontario, Canada; Kellogg Eye Center (Shah), University of Michigan, Ann Arbor, Michigan, USA; Department of Ophthalmology and Visual Sciences (Sheybani), Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA; Trillium Health Partners (Ahmed), Mississauga, Ontario, Canada; Credit Valley EyeCare (Ahmed), Mississauga, Ontario, Canada. Electronic address: ikeahmed@mac.com.
authors.forename: Iqbal Ike K
authors.initials: II
authors.lastname: Ahmed
mesh_terms: D000368:Aged; D001699:Biometry; D002924:Ciliary Body / Q000601:surgery*; D003315:Cornea / Q000503:physiopathology; D004724:Endoscopy; D005260:Female; D015812:Glaucoma, Angle-Closure / Q000601:surgery*; D006801:Humans; D017075:Laser Coagulation; D019654:Lens Implantation, Intraocular; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000503:physiopathology; D049451:Nomograms; D018918:Phacoemulsification; D012029:Refraction, Ocular / Q000502:physiology*; D012189:Retrospective Studies; D014792:Visual Acuity / Q000502:physiology