Abstract
Purpose :
Prescribing glasses for children is usually determined through examining both dry and cycloplegic refraction, those refractions might vary greatly. We sought to examine refraction and ocular biometry using IOLMaster 700 before and after cycloplegia of pediatric myopes, hyperopes, and emmetropic.
Methods :
Children age 5-11 years (N-64) were catagorized into three refraction groups, Myopes, hyperopes and emmetropes. Refraction keratometry and biometric measurments were taken before, and 40 min after dropes of cyclopentolate 1% and tropicamide 1%. The ANOVA tests was used to compare the effects of cycloplegia between the groups.
Results :
Spherical equivalent before cycloplegia were –3.77, +3.57 and +0.24 diopters(D), and changed to -1.68, +5.12, and 0.9 D during cycloplegia for the Myopes, hyperopes and emmetropes, respectively. During cycloplegia, comparable changes in axial length, anterior chamber depth, and lens thickness were measured between the groups.
Conclusions :
Cycloplegia induces a significant hyperopic shift and biometric changes that are independent of refraction.
This is a 2020 ARVO Annual Meeting abstract.