title: Falls and health status in elderly women following second eye cataract surgery: a randomised controlled trial.
abstract: OBJECTIVE
  first eye cataract surgery reduces the risk of falling. Most cataracts in elderly people are bilateral. Some binocular functions (e.g. stereopsis) are associated with falls. We aimed to determine if second eye cataract surgery reduces the risk of falling and to measure associated health gain.
  
  
  METHODS
  we randomised 239 women over 70, who had been referred to a hospital ophthalmology department, with one unoperated cataract, to expedited (approximately 4 weeks) or routine (12 months wait) surgery. Falls were ascertained by diary, with follow-up every 3 months for 12 months. We measured health status after 6 months.
  
  
  RESULTS
  visual function (especially stereopsis) improved in the operated group. Over 12 months follow-up, 48 (40%) operated participants fell at least once, 22 (18%) fell more than once. Forty-one (34%) unoperated participants fell at least once, 22 (18%) fell more than once. Rate of falling was reduced by 32% in the operated group, but this was not statistically significant (rate ratio 0.68, 95% CI 0.39, 1.19, P = 0.18). Confidence, visual disability and handicap all improved in the operated compared with the control group.
  
  
  CONCLUSIONS
  second eye cataract surgery improves visual disability and general health status. The effect on rate of falling remains uncertain.
authors.affiliation: Department of Ophthalmology, University Hospital, Queen's Medical Centre, Nottingham NG7 2UH, UK.
authors.forename: Alexander J E
authors.initials: AJ
authors.lastname: Foss
authors.forename: Rowan H
authors.initials: RH
authors.lastname: Harwood
authors.forename: Francis
authors.initials: F
authors.lastname: Osborn
authors.forename: Richard M
authors.initials: RM
authors.lastname: Gregson
authors.forename: Anwar
authors.initials: A
authors.lastname: Zaman
authors.forename: Tahir
authors.initials: T
authors.lastname: Masud
mesh_terms: D000058:Accidental Falls / Q000517:prevention & control* / Q000706:statistics & numerical data; D000368:Aged; D002386:Cataract / Q000150:complications / Q000503:physiopathology; D002387:Cataract Extraction; D005260:Female; D005500:Follow-Up Studies; D006304:Health Status; D006801:Humans; D012189:Retrospective Studies; D012307:Risk Factors; D016896:Treatment Outcome; D014792:Visual Acuity / Q000502:physiology