作者
Hassan Hashemi, Mehdi Khabazkhoob, Ebrahim Jafarzadehpur, Shiva Mehravaran, Mohammad Hassan Emamian, AbbasAli Yekta, Mohammad Shariati, Akbar Fotouhi
发表日期
2012/12/1
期刊
Clinical & experimental ophthalmology
卷号
40
期号
9
页码范围
863-868
出版商
Blackwell Publishing Asia
简介
Abstract
Background: There is limited information regarding the prevalence of presbyopia in different parts of the world. The add power and the prevalence of presbyopia by age and gender in general population of Shahroud, north of Iran, were studied.
Design: Population‐based cross‐sectional study.
Participants: Using random cluster sampling, 6311 people from the 40‐ to 64‐year‐old population of Shahroud were invited. Of the invited population, 5190 individuals (82.2%) participated in the study.
Methods: Presbyopia was defined as the correction of near vision to logMAR 1 (N8 point) with at least 1 D of add power.
Main Outcome Measures: Near visual acuity of participants was evaluated with a logMAR chart at a distance of 40 cm.
Results: Mean add power in the age groups of 40–44, 45–49, 50–54, 55–59 and 60–64 years was 0.65, 1.30, 1.70, 1.87 and 2.08 D, respectively. For each 5‐year …
学术搜索中的文章
H Hashemi, M Khabazkhoob, E Jafarzadehpur… - Clinical & experimental ophthalmology, 2012