Research of infant astigmatism in Kunming municipality

Objective:To research infant astigmatism in mass screening refraction,detecting and correcting properly infant astigmatism for the treatment and prevention of amblyopia as early as possible.Methods:The visual acuity of 1146 children(2291 eyes,1 month～3 years) were determined with retinoscopy after tropicamide cycloplegia.Results:The results of statistics show that 560 eyes(24.44%) had astigmatism and 25 eyes(1.09%) had mixed astigmatism,the grade of 13.75% astigmatism were more than 1.00D,the maxium grade of astigmatism were 4.00D,and 92.78 were direct astigmatism.Conclusion:The morbidity of astigmatism among infant in Kunming municipality were 24.44%,and most of them were low grade(1.00D).The morbidity of astigmatism among infant in Kunming municipality were 24.44%,and most of them were low grade(1.00D).The astigmatism and the grade of astigmatism decreased with age increase.We think that the 0.25～0.50D of astigmatism should be reduced depend up the age and the dioptry for their emmetropization.