Abstract:AIM:To investigate the progression of refractive errors of pupils in Hetian Road primary school of Shanghai Zhabei community and analyze the relationship between refractive errors progression and relative factors.
METHODS:All the 6-12 years old in-school pupils in Hetian Road primary school of Shanghai Zhabei community were invited in the study. The participates were examined first-visit in May 2011 and second-visit in May 2012. All the 303 pupils(606 eyes)were investigated the age, height(H), weight(W), uncorrected visual acuity(UCVA), diopter of spherical(DS), diopter of cylinder(DC), spherical equivalent(SE), axial length(AL), and corneal curvature(K). The progression of refractive condition was described and the relevant factors were analyzed.
RESULTS:Among 606 eyes, the progression of average SE was -0.45±0.60D and the progression of average AL was 0.32±0.25mm. The progression of SE diopter was positively correlated with the progression of AL(r=0.409, P<0.01). Among all eyes, 473 eyes of them developed to myopia(the progression of SE was negative)with the prevalence of 78.1%. To analyze the relationship between the progression of AL and W, when the pupils with the weight increased among 4-6kg/a, their progression of AL was the slowest(0.28±0.20mm, P=0.004). The youngest pupils with 6-8 years old, had the fastest progression of AL(0.39±0.24mm, P<0.01). There was no significantly different between H growth and DS, DC or SE(P>0.05). The incidence of poor sight(UCVA<1.0)in 2012(47.0%)was higher than that in 2011(31.5%), while it was also higher in 10-year older group(52%)than that in 10-year younger group(10%).
CONCLUSION:Myopia is the main progression of refractive error in the pupils of Hetian Road primary school in Shanghai Zhabei community. AL and growth development is closely related to the progression of refractive errors.
