Effect of refractive correction on the dynamic variation of diopter in children with hyperopia ametropic amblyopia

Objective To evaluate the effect of refractive correction on the dynamic variation of diopter in children with hyperopia ametropic amblyopia. Methods Optometry with 1 % atropine oculentum was used to examine 105 patients(210 eyes) with ametropic amblyopia aged 3～6 years old. The diopter of all the cases was compound hyperopic astigmatism. The prescriptions of spectacles were made according to that the diopter of retinoscopy subtracted different degree hyperopia. Thus,all the patients were divided into group 1(subtract 20% off the diopter of retinoscopy,30 cases),group 2(subtract 25% off the diopter of retinoscopy,40 cases),group 3(subtract 30% off the diopter of retinoscopy,35 cases). During three years' treating periods, their dynamic variation of hyperopia diopter were observed time yearly. Results The hyperopia diopter of each group reduced year after year. But the average reduction of hyperopia diopter of group was significantly lower than that of other two groups(P 0.01);There was no difference between group 2 and group 3(P0.05).Conclusion Refractive corrections of different degree have effect on emmetropization of children with hyperopia ametropic amblyopia. Moderate undercorrection is useful on emmetropization of children with hyperopic ametropic amblyopia.