title: A comparison of cataract surgical practices in Canada and the United States.
abstract: OBJECTIVE
  To determine cataract surgical practices in Canada and the United States.
  
  
  METHODS
  Cross-sectional study.
  
  
  METHODS
  1250 clinician members of the Canadian Ophthalmological Society and U.S. state societies.
  
  
  METHODS
  This survey updated and expanded upon results of a 5-state survey published in 2006. Practices for the preceding 3 years were determined for the phacoemulsification machine, the ultrasound modality, the surgical approach, the viscoelastic, and the wound size used during cataract surgery.
  
  
  RESULTS
  The participating surgeons responded concerning 963,543 surgeries. Canada had the busiest surgeons, who were more likely than their U.S. counterparts to use vertical chop and DisCoVisc. Surgeons above the median in surgical volume were more likely to use ultrapulse ultrasound, less likely to use a divide-and-conquer approach, and more likely to use a vertical chopping approach than were those below the median. The northeastern United States had the least busy surgeons. OZil is the most common ultrasound modality used today.
  
  
  CONCLUSIONS
  This expanded survey revealed that practice patterns vary quite widely. Furthermore, the preponderance of OZil ultrasound since the 2006 survey shows that changes in the field can happen very rapidly.
authors.affiliation: Department of Ophthalmology and Visual Sciences, University of Utah, Salt Lake City, UT, USA.
authors.forename: Tyler
authors.initials: T
authors.lastname: Sorensen
authors.forename: Clara C
authors.initials: CC
authors.lastname: Chan
authors.forename: Michael
authors.initials: M
authors.lastname: Bradley
authors.forename: Rosa
authors.initials: R
authors.lastname: Braga-Mele
authors.forename: Randall J
authors.initials: RJ
authors.lastname: Olson
mesh_terms: D002170:Canada; D002387:Cataract Extraction / Q000295:instrumentation / Q000379:methods / Q000706:statistics & numerical data*; D003430:Cross-Sectional Studies; D006302:Health Services Research; D006306:Health Surveys; D006801:Humans; D008866:Microsurgery / Q000706:statistics & numerical data; D009885:Ophthalmology; D010818:Practice Patterns, Physicians' / Q000706:statistics & numerical data*; D012955:Societies, Medical / Q000706:statistics & numerical data; D014481:United States; D055675:Viscosupplements / Q000008:administration & dosage; D000078329:Workforce; D014945:Wound Healing
chemical_list: D055675:Viscosupplements