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Background: The prevalence of astigmatism, its axis and determinants were determined in the 40‐ to 64‐year‐old population of Shahroud, Iran.
Design: Population‐based cross sectional study.
Participants: Using random cluster sampling, 6311 subjects were invited for eye examinations. Of 5190 participants (response rate = 82.2%), data of 5020 were eligible for analysis.
Methods: Participants received...
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