The 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 mydriatic cycloplegic was used to examine 124 patients(248 eyes)with ametropic amblyopia aged 4～5 years old.The diopter of all the cases were compound hyperopic astigmatism.The prescription of spectacles were made according to that the diopter of retinoscopy subtracted different dagree hyperopia.Thus,all the patients were divided into group 1(subtract +0.50～+1.00DS,44 cases),group 2(subtract +1.50～+2.00DS,42 cases),and group 3(subtract +2.50～+3.00DS,38 cases).During three years′ treating periods,their dynamic variation of hyperopia diopter were observed time yearly. Results The hyperopia diopter of each group had reduced year after year.But the average reduction of hyperopia diopter of group one was significantly lower than that of other two groups( P 0.01);there was no difference between group 2 and group 3( P 0.05). Conclusions Refractive correction 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.