Myopic Progression According to the Age of Onset in Childhoods

Kim, Seung Young; Min, Byung Moo

Abstract

It is well known that the myopic progression in myopic children is related with the age of onset, and the amounts of myopia. The authors performed cycloplegic refraction in 75 children, which were less than -1.50 diopters initially. They were divided in 4 groups according to the age of onset of myopia ; group A[less than 3 years], group B[4-6 years] , group C[7-10 years], and group D[11-15 years]. The authors investigated the myopic progression according to the age of onset at one, two, and three years. The overall annual progression was 0.67+/-0.37D per a year. The most rapid progression was noted in group B, 0.92+/-0.33D per a year, and lowest rate in group D, 0.35+/-0.26D per a year. There was most rapid progression with 0.73+/-0.35D per a year during the one year after the onset of myopia. But there was no difference with respect to sex. Therefore, children with age of the onset of myopia in 4-6, and 7-10 years before puberty appeared to show more rapid progression than other groups. And one year after onset of myopia showed the most rapid myopic progression.