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Middle East Afr J Ophthalmol. 2018 Jan-Mar;25(1):40-46. doi: 10.4103/meajo.MEAJO_300_17.

Frequency of Cataract in Iran: A Meta-Analysis and Systematic Review.

Author information

1
Department of Nursing, School of Nursing, Zabol University of Medical Sciences, Zabol, Iran.
2
Department of Ophthalmology, Alzahar Eye Hospital, Zahedan University of Medical Science, Zahedan, Iran.
3
Student Research Committee ,School of Nursing, Iran University of Medical Sciences, Tehran, Iran.
4
Department of Student Research Committee, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
5
Department of Epidemiology, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Abstract

PURPOSE:

Cataract is the leading cause of blindness and the second cause of low vision in the world. In the world, Asia has the highest number of blind population. The aim of the present systematic review and meta-analysis was to assess the frequency of clinical cataracts in Iran.

MATERIALS AND METHODS:

The frequency of clinical cataract was defined based on the international criteria and the measured outcome of the disease. Study selection, data extraction, and quality assessment were performed by two independent reviewers. We explored PubMed, Google Scholar, ISI Web of Science, and national databases (scientific information database, Magiran) to evaluate the clinical cataract of cataract in the Iranian populations from 1995 to July 2017. Statistical analysis was performed using STATA 14.0 software.

RESULTS:

Of 283 studies, 27 studies utilized meta-analysis. In 2017, the pooled overall frequency of clinical cataract in 59668 people was 9.27% (95% confidence interval [CI]: 8.09, 10.45, I2 = 98.82%). Based on subgroup analysis, in the random effect method, the frequency of clinical cataract in males and females were 8.03% (CI: 6.78, 9.28) and 8.32% (CI: 7.08, 9.55), respectively.

CONCLUSION:

Regarding the high frequency of clinical cataract in Iran, it seems that paying attention to the results of the current study and the application of international policy plans may contribute to better cataract control in Iran.

KEYWORDS:

Cataract; Iran; meta-analysis; systematic reviews

PMID:
29899650
PMCID:
PMC5974817
DOI:
10.4103/meajo.MEAJO_300_17
[Indexed for MEDLINE]
Free PMC Article

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