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Uncorrected low hyperopia in young subjects induces postural instability even in those with clear visual acuity

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  • Byeong-Yeon Moon
  • Hyun Gug Cho
  • Dong-Sik Yu
  • Sang-Yeob Kim

Abstract

Reports have indicated the effect of myopic blur on postural stability. The objective of this study was to investigate the minimum refractive error to significantly affect postural stability through a various levels of hyperopia and myopia induced by ophthalmic lenses. Forty subjects with a mean age of 22.95 ± 2.21 years were enrolled. In all subjects, the subjective refraction with MPMVA (Maximum to Plus Maximum Visual Acuity) was performed to correct refractive error. To induce hyperopia and myopia, spherical lenses of ±1.0, ±2.0, ±3.0, ±4.0, ±5.0 and ±6.0 D were used on top of the trial frame with corrected condition as MPMVA (eyes-open with MPMVA). Under each induced-refractive error condition, general stability (ST) and sway power (SP) in frequencies by each subsystem were measured with Tetrax posturography with firm plates at patient’s upright position, after performed the measurements under the conditions of eyes-open with MPMVA and eyes-closed. ST at eyes-closed was significantly greater than that at eyes-open with MPMVA (p

Suggested Citation

  • Byeong-Yeon Moon & Hyun Gug Cho & Dong-Sik Yu & Sang-Yeob Kim, 2019. "Uncorrected low hyperopia in young subjects induces postural instability even in those with clear visual acuity," PLOS ONE, Public Library of Science, vol. 14(10), pages 1-12, October.
    • Handle: RePEc:plo:pone00:0224031
    DOI: 10.1371/journal.pone.0224031
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