Abstract：
To determine the prevalence of refractive error (RE) and associated risk factors for myopic refractive errors in children and young adults from the urban region of Hyderabad, South India.
Four thousand sixty-five (4,065) participants aged 6-22 years were enrolled and examined in this cross-sectional study conducted from October 2013 to January 2015. Participants were enrolled from a random sample of schools and universities in regions representative of urban Hyderabad. RE was determined using cycloplegic autorefraction. The association of demographic factors such as age, gender, and socio-economic category (SEC) (low/mid/high) with myopia was explored with logistic regression with robust standard error.
Of the total participants, 2,259 were children aged 6-15 years and 1,806 were adolescents and young adults aged 16-22 years. Overall prevalence of myopia, high myopia (≤ -5.00D and ≤ -6.00 D), hyperopia, emmetropia, and astigmatism was 29.8% (95% CI: 26.0% to 33.6%, n = 1,216), 2.9% (95% CI: 1.9% to 3.9%, n = 120), 1.1% (95%CI: 0.7% to 1.5%, n = 46), 14.7% (95% CI: 12.4% to 17.0%, n = 599), 46.9% (95% CI: 43.7% to 50.1%, n = 1913) and 8.6% (95% CI: 7.4% to 9.9%, n = 352) respectively. A strong correlation existed between age and prevalence of myopia (R2 = 0.88, p < .001) and high myopia (R2 = 0.71, p < .001). Children from schools of low SEC (34.7%) had higher prevalence of myopia compared to the mid SEC (16.8%) (p = .043).
Myopia was the most prevalent refractive error and increased with age in this urban population. More myopia was observed in schools of low SEC.
Four thousand sixty-five (4,065) participants aged 6-22 years were enrolled and examined in this cross-sectional study conducted from October 2013 to January 2015. Participants were enrolled from a random sample of schools and universities in regions representative of urban Hyderabad. RE was determined using cycloplegic autorefraction. The association of demographic factors such as age, gender, and socio-economic category (SEC) (low/mid/high) with myopia was explored with logistic regression with robust standard error.
Of the total participants, 2,259 were children aged 6-15 years and 1,806 were adolescents and young adults aged 16-22 years. Overall prevalence of myopia, high myopia (≤ -5.00D and ≤ -6.00 D), hyperopia, emmetropia, and astigmatism was 29.8% (95% CI: 26.0% to 33.6%, n = 1,216), 2.9% (95% CI: 1.9% to 3.9%, n = 120), 1.1% (95%CI: 0.7% to 1.5%, n = 46), 14.7% (95% CI: 12.4% to 17.0%, n = 599), 46.9% (95% CI: 43.7% to 50.1%, n = 1913) and 8.6% (95% CI: 7.4% to 9.9%, n = 352) respectively. A strong correlation existed between age and prevalence of myopia (R2 = 0.88, p < .001) and high myopia (R2 = 0.71, p < .001). Children from schools of low SEC (34.7%) had higher prevalence of myopia compared to the mid SEC (16.8%) (p = .043).
Myopia was the most prevalent refractive error and increased with age in this urban population. More myopia was observed in schools of low SEC.
摘要：
UNASSIGNED：为了确定海得拉巴市区儿童和年轻人的屈光不正（RE）患病率和近视屈光不正的相关危险因素，南印度。
UNASSIGNED：在2013年10月至2015年1月进行的这项横断面研究中，纳入并检查了四千名6-22岁的参与者。参与者是从海得拉巴城市代表地区的学校和大学的随机样本中注册的。RE是使用睫状肌麻痹自屈光法测定的。人口因素的关联，如年龄，性别,和社会经济类别（SEC）（低/中/高）的近视进行了逻辑回归与稳健的标准误。
未经授权：在所有参与者中，2,259名6-15岁的儿童，1,806名16-22岁的青少年和年轻人。近视的总体患病率，高度近视（≤-5.00D和≤-6.00D），远视,正视,散光为29.8%（95%CI：26.0%至33.6%，n=1,216)，2.9%（95%CI：1.9%至3.9%，n=120),1.1%（95CI：0.7%至1.5%，n=46),14.7%（95%CI：12.4%至17.0%，n=599),46.9%（95%CI：43.7%至50.1%，n=1913)和8.6%(95%CI：7.4%至9.9%，n=352)。年龄与近视患病率（R2=0.88，p<.001）和高度近视（R2=0.71，p<.001）之间存在很强的相关性。来自低SEC（34.7％）学校的儿童近视患病率高于中SEC（16.8％）（p=.043）。
UnASSIGNED：近视是城市人口中最常见的屈光不正，并且随着年龄的增长而增加。在低SEC的学校中观察到更多的近视。
UNASSIGNED：在2013年10月至2015年1月进行的这项横断面研究中，纳入并检查了四千名6-22岁的参与者。参与者是从海得拉巴城市代表地区的学校和大学的随机样本中注册的。RE是使用睫状肌麻痹自屈光法测定的。人口因素的关联，如年龄，性别,和社会经济类别（SEC）（低/中/高）的近视进行了逻辑回归与稳健的标准误。
未经授权：在所有参与者中，2,259名6-15岁的儿童，1,806名16-22岁的青少年和年轻人。近视的总体患病率，高度近视（≤-5.00D和≤-6.00D），远视,正视,散光为29.8%（95%CI：26.0%至33.6%，n=1,216)，2.9%（95%CI：1.9%至3.9%，n=120),1.1%（95CI：0.7%至1.5%，n=46),14.7%（95%CI：12.4%至17.0%，n=599),46.9%（95%CI：43.7%至50.1%，n=1913)和8.6%(95%CI：7.4%至9.9%，n=352)。年龄与近视患病率（R2=0.88，p<.001）和高度近视（R2=0.71，p<.001）之间存在很强的相关性。来自低SEC（34.7％）学校的儿童近视患病率高于中SEC（16.8％）（p=.043）。
UnASSIGNED：近视是城市人口中最常见的屈光不正，并且随着年龄的增长而增加。在低SEC的学校中观察到更多的近视。
