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Study finds direct correlation between hyperopia, other conditions in preschoolers
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Researchers found that the presence of hyperopia among preschoolers was associated with a higher incidence of amblyopia, strabismus, anisometropia, astigmatism and reduced stereoacuity.
The study published in Optometry & Vision Science included 3- to 5- year-old Head Start preschoolers who underwent vision examination including monocular visual acuity, cover testing and cycloplegic refraction.
The abstract stated that stereoacuity testing was performed on 2,898 children during study years 2 and 3. Relative to children without hyperopia, children with hyperopia greater than +3.25 D had a higher proportion of amblyopia and strabismus. Higher levels of hyperopia were associated with higher proportions of amblyopia and strabismus.
The presence of hyperopia greater than +3.25 D was also associated with a higher incidence of anisometropia and astigmatism, according to the abstract. Median stereoacuity of nonstrabismic, nonamblyopic children with hyperopia was worse than children without the condition. In addition, researchers found more severe levels of hyperopia were associated with worse stereoacuity.
Researchers concluded that the presence and magnitude of hyperopia among preschoolers were associated with higher proportions of amblyopia, strabismus, anisometropia and astigmatism and with worse stereoacuity even among nonstrabismic, nonamblyopic children.
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Kulp MT, et al. Optom & Vis Sci. 2014;doi: 10.1097/OPX.0000000000000223
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