Article Text

PDF
Gonioscopy findings and prevalence of occludable angles in a Burmese population: the Meiktila Eye Study
  1. R J Casson1,
  2. H S Newland1,
  3. J Muecke1,
  4. S McGovern1,
  5. L M Abraham1,
  6. W K Shein2,
  7. D Selva1,
  8. T Aung3
  1. 1South Australian Institute of Ophthalmology, Department of Ophthalmology & Visual Sciences, Adelaide University, Adelaide, South Australia
  2. 2Trachoma Control and Prevention Programme, Meiktila Eye Hospital, Meiktila, Myanmar
  3. 3Yangon Eye Hospital, Yangon, Myanmar
  1. Correspondence to: Professor R J Casson Department of Ophthalmology & Visual Sciences, South Australian Institute of Ophthalmology, Adelaide University, South Australia 5000, Australia; robert.casson{at}adelaide.edu.au

Abstract

Aim: To determine the prevalence of preglaucomatous angle-closure disease in central Myanmar.

Methods: A population-based survey of inhabitants ⩾40 years in the Meiktila District was carried out; 2481 subjects were identified, 2076 participated and 2060 underwent gonioscopy of at least one eye. Eyes with angles traditionally described as “occludable” were recorded as primary angle-closure suspects (PACS); eyes with PACS and peripheral anterior synechiae (PAS), or an increased intraocular pressure but without primary angle-closure glaucoma, were recorded as primary angle closure (PAC).

Results: The prevalence of PACS in at least one eye was 5.7% (95% CI 4.72 to 6.62); prevalence increased with age and was more common in women (p<0.001). The prevalence of PAC in at least one eye was 1.50% (95% CI 1.47 to 1.53). All participants with PAS had at least 90° of closure (range 90–360°).

Conclusion: The prevalence of preglaucomatous angle-closure disease (PACS and PAC) in this population was 5.7% and 1.5%, respectively. PACS was more common in women, and its prevalence increased with age.

  • GON, glaucomatous optic neuropathy
  • IOP, intraocular pressure
  • ISGEO, International Society for Geographical and Epidemiological Ophthalmology
  • MOH, Meiktila Eye Study
  • PAC, primary angle closure
  • PACG, primary angle-closure glaucoma
  • PACS, primary angle-closure suspects
  • PAS, peripheral anterior synechiae
  • VDCR, vertical cup:disc ratio

Statistics from Altmetric.com

Footnotes

  • Competing interests: None.

Request permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.

Linked Articles