关键词: 散光, 子午线弱视, 儿童

Abstract: Objective To investigate the relationship of ≥1.00DC astigmatism and meridian amblyopia in 4~8 years old children. Method A total of 1 005 out-patients (1 910 eyes) were analyzed which regular astigmatism degree ≥1.00DC by retinoscopy under cycloplegia. Results There were 1 636 eyes(85.7%) of different astigmatism in 4~6 years old children,and 274 eyes(14.3%) in 7~8 years old children.Compound hyperopic astigmatism(53.2%)was the most astigmatism type,and then mixed astigmatism (29.4%).There was significant difference in astigmatism constituent ratio(χ²=134.52,P<0.05)in different ages.There were 1 796 eyes(92.4%) with amblyopia cause by asitgmatism,mild amoblypia shared of big part (69.3%),and moderate amblypia was in the minority (23.1%).Only 3 eyes were severe amblyopia.There was significant difference in astigmatism degree and best corrected visual acuity(χ²=362.732,P<0.05). Conclusions Mild and moderate amblyopia are easy to occur and become the main components in children while astigmatism degree ≥1.00DC.There are different distributions of astigmatism type in children.The main type is compound hyperopic astigmatism and then is mixed astigmatism.With the increasing astigmatism degree,best corrected visual acuity has been falling.The most important period of astigmatism screening and optical correction is pre-school.

Key words: astigmatism, meridian amblyopia, children