Astigmatism changes following hyperopia correction in accommodative esotropia children

Objective To assess the longitudinal changes in the astigmatism of children with accommodative esotropia.Methods Refractive errors were followed longitudinally for accommodative esotropia children complying with inclusion criteria.Cycloplegic refractions were performed using retinoscopy and full corrections were prescribed.The refractive data were analyzed for two groups of children based on their age at the time spectacles were first prescribed and then followed every year for at least 3 years.Astigmatism was analyzed using 90-180 degree astigmatism J180 and 45-135 degree astigmatism J45.Results Forty-four children were recruited aged 4.7±1.7 years with follow up of 4.3±1.4 years.In age group ≥2yrs ＜4yrs,the mean J180 was initially 0.35±0.34D and had a 0.28D and 0.20D increased at 2nd and 3rd year after glasses wearing,respectively.In ≥4yrs ＜8yrs age group,the mean J180 was initially 0.34±0.44D and had a 0.22D and 0.18D increased at 1st and 2nd year (P ＜0.05),respectively.J180 decreased to the initial level in later years for both groups.Over time,the mean J45 remained low level with little variation.Conclusions Astigmatism increases following prescribing and decreases to initial degree of astigmatism for children with accommodative esotropia and this change has no relation with their age when spectacle wear is initiated.Glasses wearing might influence the refractive development in certain time. Key words: Accommodative esotropia; Astigmatism; Hyperopia; Optical correction