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Functional Visual Acuity of Early Presbyopia

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Listed:
  • Yusaku Katada
  • Kazuno Negishi
  • Kazuhiro Watanabe
  • Yuta Shigeno
  • Megumi Saiki
  • Hidemasa Torii
  • Minako Kaido
  • Kazuo Tsubota

Abstract

Purpose: To evaluate visual function in patients with early presbyopia using the functional visual acuity (FVA) test. Methods: This study included 27 eyes of 27 healthy older volunteers (mean age, 44.1 ± 2.6 years) and 14 eyes of 14 healthy young volunteers (mean age, 28.4±4.8 years). The distance-corrected visual acuity (DCVA), distance-corrected near VA (DCNVA), subjective amplitude of accommodation (AA), and distance and near pupillary diameters were measured. The distance FVA and distance-corrected near FVA (DCNFVA) were measured using the FVA Measurement System. The standard Schirmer test and standard tear break-up time measurement also were performed. Results: The logarithm of the minimum angle of resolution (logMAR) DCVA was better than 0 in all subjects. The percentages of subjects with logMAR DCNVA below 0 was significantly lower in the presbyopia group than in the young group. The DCNFVA in the presbyopia group was significantly (P

Suggested Citation

  • Yusaku Katada & Kazuno Negishi & Kazuhiro Watanabe & Yuta Shigeno & Megumi Saiki & Hidemasa Torii & Minako Kaido & Kazuo Tsubota, 2016. "Functional Visual Acuity of Early Presbyopia," PLOS ONE, Public Library of Science, vol. 11(3), pages 1-9, March.
    • Handle: RePEc:plo:pone00:0151094
    DOI: 10.1371/journal.pone.0151094
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