title: Prevalence of cataract surgery and postoperative visual outcome in rural central India Central India Eye and Medical Study.
abstract: OBJECTIVE
  To determine the prevalence of cataract surgery and the postoperative visual outcomes in rural central India.
  
  
  METHODS
  Villages in rural central India.
  
  
  METHODS
  Cohort study.
  
  
  METHODS
  The population-based Central India Eye and Medical Study examined the prevalence of surgical pseudophakia/aphakia, the postoperative visual acuity, and the reasons for decreased postoperative vision in subjects aged 30+ in rural central India. Visual impairment was defined as (1) presenting visual acuity worse than 6/18 or (2) corrected distance visual acuity (CDVA) worse than 6/18.
  
  
  RESULTS
  Of the 9392 eyes (99.7%) of 4711 subjects with available data on the lens status, 318 eyes (3.4%) (234 patients, 129 women) had had cataract surgery (5.0% ± 0.3%). Cataract surgery was significantly associated with age (P<.001), female sex (P = .008), shorter axial length (P<.001), and diabetes mellitus (P<.001). The prevalence of postoperative presenting visual impairment was 63% (201/318 eyes) and of postoperative CDVA impairment, 36% (117/318 eyes). The major cause of the former was incorrect intraocular lens (IOL) power (42%); the major causes of the latter were posterior capsule opacification (24%), surgical complications (21%), age-related macular degeneration (10.3%), other macular disorders (4.3%), corneal opacities (3.4%), and glaucoma (2.0%). Surgical complications were significantly more common in the aphakic group than in the pseudophakic group (46.4% versus 2.0%; P<.001).
  
  
  CONCLUSIONS
  Approximately 5% of the central India population aged 30 years or older had had cataract surgery. Postoperative visual impairment was present in 2 of 3 eyes. The major reasons were incorrect IOL power and surgical complications. Improved IOL power calculations and improved surgical techniques may markedly improve postoperative outcome.
  
  
  BACKGROUND
  No author has a financial or proprietary interest in any material or method mentioned.
authors: Suraj Eye Institute, Nagpur, Maharashtra, India.
authors: Vinay
authors: V
authors: Nangia
authors: Jost B
authors: JB
authors: Jonas
authors: Rajesh
authors: R
authors: Gupta
authors: Anshu
authors: A
authors: Khare
authors: Ajit
authors: A
authors: Sinha
mesh_terms: D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D001036:Aphakia, Postcataract / Q000453:epidemiology / Q000503:physiopathology; D002386:Cataract / Q000453:epidemiology*; D002387:Cataract Extraction / Q000706:statistics & numerical data*; D015331:Cohort Studies; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D015994:Incidence; D007194:India / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period; D015995:Prevalence; D019591:Pseudophakia / Q000453:epidemiology / Q000503:physiopathology; D012030:Refractive Errors / Q000453:epidemiology; D012424:Rural Population / Q000706:statistics & numerical data*; D014792:Visual Acuity / Q000502:physiology*