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Prevalence and causes of blindness, visual impairment, and cataract surgery in Timor-Leste

Overview of attention for article published in Clinical Ophthalmology, November 2017
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About this Attention Score

  • In the top 25% of all research outputs scored by Altmetric
  • High Attention Score compared to outputs of the same age (88th percentile)
  • High Attention Score compared to outputs of the same age and source (92nd percentile)

Mentioned by

news
1 news outlet
policy
1 policy source
twitter
4 tweeters

Citations

dimensions_citation
13 Dimensions

Readers on

mendeley
53 Mendeley
Title
Prevalence and causes of blindness, visual impairment, and cataract surgery in Timor-Leste
Published in
Clinical Ophthalmology, November 2017
DOI 10.2147/opth.s146901
Pubmed ID
Authors

Marcelino Correia, Taraprasad Das, Julia Magno, Bernardete Maria Pereira, Valerio Andrade, Hans Limburg, John Trevelyan, Jill Keeffe, Nitin Verma, Yuddha Sapkota

Abstract

To estimate the prevalence and causes of blindness and visual impairment, cataract surgical coverage (CSC), visual outcome of cataract surgery, and barriers to uptake cataract surgery in Timor-Leste. In a nationwide rapid assessment of avoidable blindness (RAAB), the latest population (1,066,409) and household data were used to create a sampling frame which consists of 2,227 population units (study clusters) from all 13 districts, with populations of 450-900 per unit. The sample size of 3,350 was calculated with the assumed prevalence of blindness at 4.5% among people aged ≥50 years with a 20% tolerable error, 95% CI, and a 90% response rate. The team was trained in the survey methodology, and inter-observer variation was measured. Door-to-door visits, led by an ophthalmologist, were made in preselected study clusters, and data were collected in line with the RAAB5 survey protocol. An Android smart phone installed with mRAAB software was used for data collection. The age-gender standardized prevalence of blindness, severe visual impairment, and visual impairment were 2.8%, (1.8-3.8), 1.7% (1.7-2.3), and 8.1% (6.6-9.6), respectively. Cataract was the leading cause of blindness (79.4%). Blindness was more prevalent in the older age group and in women. CSC was 41.5% in cataract blind eyes and 48.6% in cataract blind people. Good visual outcome in the cataract-operated eyes was 62% (presenting) and 75.2% (best corrected). Two important barriers to not using available cataract surgical services were accessibility (45.5%) and lack of attendants to accompany (24.8%). The prevalence of blindness and visual impairment in Timor-Leste remains high. CSC is unacceptably low; gender inequity in blindness and CSC exists. Lack of access is the prominent barrier to cataract surgery.

Twitter Demographics

The data shown below were collected from the profiles of 4 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 53 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 53 100%

Demographic breakdown

Readers by professional status Count As %
Other 9 17%
Student > Master 8 15%
Student > Bachelor 7 13%
Researcher 6 11%
Student > Postgraduate 3 6%
Other 7 13%
Unknown 13 25%
Readers by discipline Count As %
Medicine and Dentistry 18 34%
Nursing and Health Professions 11 21%
Agricultural and Biological Sciences 1 2%
Computer Science 1 2%
Unspecified 1 2%
Other 4 8%
Unknown 17 32%

Attention Score in Context

This research output has an Altmetric Attention Score of 16. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 09 June 2022.
All research outputs
#1,845,910
of 21,972,331 outputs
Outputs from Clinical Ophthalmology
#112
of 3,037 outputs
Outputs of similar age
#51,604
of 448,897 outputs
Outputs of similar age from Clinical Ophthalmology
#3
of 40 outputs
Altmetric has tracked 21,972,331 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 91st percentile: it's in the top 10% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 3,037 research outputs from this source. They receive a mean Attention Score of 4.6. This one has done particularly well, scoring higher than 96% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 448,897 tracked outputs that were published within six weeks on either side of this one in any source. This one has done well, scoring higher than 88% of its contemporaries.
We're also able to compare this research output to 40 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 92% of its contemporaries.