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Prevalence of cataract surgery and postoperative visual outcome in rural central India Central India Eye and Medical Study.

AbstractPURPOSE:
To determine the prevalence of cataract surgery and the postoperative visual outcomes in rural central India.
SETTING:
Villages in rural central India.
DESIGN:
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.
FINANCIAL DISCLOSURE:
No author has a financial or proprietary interest in any material or method mentioned.
AuthorsVinay Nangia, Jost B Jonas, Rajesh Gupta, Anshu Khare, Ajit Sinha
JournalJournal of cataract and refractive surgery (J Cataract Refract Surg) Vol. 37 Issue 11 Pg. 1932-8 (Nov 2011) ISSN: 1873-4502 [Electronic] United States
PMID21908172 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
CopyrightCopyright © 2011 ASCRS and ESCRS. Published by Elsevier Inc. All rights reserved.
Topics
  • Adult
  • Age Distribution
  • Aged
  • Aged, 80 and over
  • Aphakia, Postcataract (epidemiology, physiopathology)
  • Cataract (epidemiology)
  • Cataract Extraction (statistics & numerical data)
  • Cohort Studies
  • Cross-Sectional Studies
  • Female
  • Humans
  • Incidence
  • India (epidemiology)
  • Male
  • Middle Aged
  • Postoperative Period
  • Prevalence
  • Pseudophakia (epidemiology, physiopathology)
  • Refractive Errors (epidemiology)
  • Rural Population (statistics & numerical data)
  • Visual Acuity (physiology)

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