title: Long-term prevalence of pseudophakic photic phenomena.
abstract: OBJECTIVE
  To describe the types and prevalence of long-term, established pseudophakic dysphotopsia in a typical population more than a year after cataract extraction.
  
  
  METHODS
  Cross-sectional observational study.
  
  
  METHODS
  Fifty-five patients who had undergone cataract surgery more than a year before were administered a questionnaire that was based on photographic images of photic phenomena.
  
  
  RESULTS
  Dysphotopsia were found in 18 of 55 patients. There was a predominance of halos and starburst effects but also substantial symptoms of arc effect, streams of light, and central flash. There was no correlation between measured dysphotopsia and age, final attained acuity, or contrast sensitivity.
  
  
  CONCLUSIONS
  Dysphotopsia in the operated eye was still a common symptom in its many forms more than a year after uncomplicated cataract surgery. There was no correlation of symptoms with age or visual function.
authors.affiliation: Princess Alexandra Eye Pavilion, Edinburgh, United Kingdom. TAslam@aol.com
authors.forename: Tariq M
authors.initials: TM
authors.lastname: Aslam
authors.forename: Manish
authors.initials: M
authors.lastname: Gupta
authors.forename: David
authors.initials: D
authors.lastname: Gilmour
authors.forename: Niall
authors.initials: N
authors.lastname: Patton
authors.forename: Baljean
authors.initials: B
authors.lastname: Dhillon
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D003430:Cross-Sectional Studies; D006801:Humans; D019654:Lens Implantation, Intraocular; D008875:Middle Aged; D018918:Phacoemulsification; D015995:Prevalence; D019591:Pseudophakia / Q000503:physiopathology*; D011795:Surveys and Questionnaires; D014788:Vision, Entoptic / Q000502:physiology*; D014792:Visual Acuity