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Prevalence of presbyopia and spectacle correction coverage in a rural population of North West Nigeria

Overview of attention for article published in Clinical Ophthalmology, June 2015
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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 (85th percentile)
  • High Attention Score compared to outputs of the same age and source (89th percentile)

Mentioned by

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1 news outlet
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1 X user

Citations

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16 Dimensions

Readers on

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77 Mendeley
Title
Prevalence of presbyopia and spectacle correction coverage in a rural population of North West Nigeria
Published in
Clinical Ophthalmology, June 2015
DOI 10.2147/opth.s81194
Pubmed ID
Authors

Murtala Muhammad Umar, Nasiru Muhammad, Mahmoud B Alhassan

Abstract

To determine the prevalence of presbyopia, and near vision spectacle coverage in a rural population of Northwestern Nigeria. Cross sectional prevalence study. Six hundred and fifty people of at least 40 years of age, in 13 clusters (50 per cluster) were examined using a multi-stage random sampling with probability proportional to size. The survey was conducted from April 7 to 28, 2012 at Bungudu Local Government Area of Zamfara State, Nigeria. Presbyopia was defined as the inability to read N8 at 40 cm. Presbyopic Spectacle Correction Coverage (PSCC) was calculated, and information on barriers to using near vision spectacles identified. The crude prevalence of presbyopia was 30.4%, 95% CI: (26.8%-34.1%). The prevalence was significantly higher in females (P=0.0005) and individuals with at least secondary education (P=0.022). The age specific prevalence of presbyopia was three times (63.5%) more among those aged 70 years and above, as compared to those within 40-49 years age group (19.3%). The met need was 0.2%, the unmet need 30.2%, and a PSCC of 0.7%. The major barriers reported as reasons for not obtaining near vision spectacles were unawareness and lack of felt need. The prevalence of presbyopia in Bungudu is relatively low compared to other reports with major risk factors being increasing age, female sex and attainment of higher education. The presbyopic spectacles correction coverage is very low with high unmet need thus there is a need to create awareness, and provide affordable and accessible optical services in the affected population.

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X Demographics

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 77 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 77 100%

Demographic breakdown

Readers by professional status Count As %
Student > Postgraduate 11 14%
Student > Master 10 13%
Researcher 8 10%
Student > Bachelor 7 9%
Lecturer 4 5%
Other 14 18%
Unknown 23 30%
Readers by discipline Count As %
Medicine and Dentistry 31 40%
Nursing and Health Professions 9 12%
Social Sciences 3 4%
Agricultural and Biological Sciences 1 1%
Computer Science 1 1%
Other 5 6%
Unknown 27 35%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 11. 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 19 September 2023.
All research outputs
#3,274,470
of 25,373,627 outputs
Outputs from Clinical Ophthalmology
#235
of 3,712 outputs
Outputs of similar age
#40,570
of 281,402 outputs
Outputs of similar age from Clinical Ophthalmology
#8
of 79 outputs
Altmetric has tracked 25,373,627 research outputs across all sources so far. Compared to these this one has done well and is in the 86th percentile: it's in the top 25% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 3,712 research outputs from this source. They receive a mean Attention Score of 4.9. This one has done particularly well, scoring higher than 93% 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 281,402 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 85% of its contemporaries.
We're also able to compare this research output to 79 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 89% of its contemporaries.