July 2018
Volume 59, Issue 9
Open Access
ARVO Annual Meeting Abstract  |   July 2018
Effectiveness of barrier-free display on accommodation
Author Affiliations & Notes
  • Takushi Kawamorita
    Department of Orthoptics and Visual Science, Kitasato University, Sagamihara, Kanagawa, Japan
  • Kanto Miyazaki
    Olympus Co Ltd, Hachioji, Tokyo, Japan
  • Takeshi Yamazaki
    Olympus Communication Technology of America, San Diego, California, United States
  • Saki Takahashi
    Department of Orthoptics and Visual Science, Kitasato University, Sagamihara, Kanagawa, Japan
  • Momoko Nakatani
    Department of Orthoptics and Visual Science, Kitasato University, Sagamihara, Kanagawa, Japan
  • Sanae Miyaji
    Department of Orthoptics and Visual Science, Kitasato University, Sagamihara, Kanagawa, Japan
  • Tomoya Handa
    Department of Orthoptics and Visual Science, Kitasato University, Sagamihara, Kanagawa, Japan
  • Nobuyuki Shoji
    Department of Ophthalmology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
  • Footnotes
    Commercial Relationships   Takushi Kawamorita, Olympus Co Ltd (F); Kanto Miyazaki, Olympus Co Ltd (E); Takeshi Yamazaki, Olympus Co Ltd (E); Saki Takahashi, None; Momoko Nakatani, None; Sanae Miyaji, None; Tomoya Handa, None; Nobuyuki Shoji, None
  • Footnotes
    Support  a Kitasato University Research Grant for Young Researchers (2017) (T.K.)
Investigative Ophthalmology & Visual Science July 2018, Vol.59, 2943. doi:
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    • Get Citation

      Takushi Kawamorita, Kanto Miyazaki, Takeshi Yamazaki, Saki Takahashi, Momoko Nakatani, Sanae Miyaji, Tomoya Handa, Nobuyuki Shoji; Effectiveness of barrier-free display on accommodation. Invest. Ophthalmol. Vis. Sci. 2018;59(9):2943.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose : The purpose of the study was to investigate effectiveness of barrier-free display (BFD; Olympus Co Ltd, Tokyo, Japan) on accommodation. The BFD use microlens-array-based exit-pupil expander.

Methods : Fifteen eyes from 15 subjects (mean age 21.1 years) with no ophthalmic disease other than refractive errors were enrolled. The objective refraction was measured with WAW-5500 (Shigiya Machinery Works Ltd, Hiroshima, Japan), which can measure in open-view under examinations of visual function. The accommodative demand was from 1.0 D to 5.0 D. The tenets of the Declaration of Helsinki were followed in this study and informed consent was obtained from all subjects. The Institutional Review Board at Kitasato University School of Allied Health Sciences approved the prospective study.

Results : The objective refraction of accommodative demand 1.0 D, 2.0 D, 3.0 D, and 5.0 D in the smartphone display was -0.71 ± 1.0 D, -1.23 ± 0.77 D, -1.94 ± 1.18 D, and -3.51 ± 2.25 D, respectively (ANOVA, p < 0.01). That in the BFD was -0.22 ± 0.59 D, -0.15 ± 0.57 D, -0.11 ± 0.46 D, and -0.21 ± 0.52 D, respectively (ANOVA, p > 0.05). The objective refraction in smartphone display significantly showed a myopic shift compared with the BFD (two-way ANOVA, p < 0.01).

Conclusions : Our results reveal that the BFD does not require accommodation under the near viewing condition. Therefore, the BFD could be helpful for near works, and could be a potential device for presbyopia, and prevention of eyestrain or myopia progression.

This is an abstract that was submitted for the 2018 ARVO Annual Meeting, held in Honolulu, Hawaii, April 29 - May 3, 2018.

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