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Serial measurements of accommodation by open-field Hartmann–Shack wavefront aberrometer in eyes with accommodative spasm

  • Clinical Investigation
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Abstract

Purpose

To investigate the serial changes of accommodation and spherical aberration in eyes with accommodative spasm.

Methods

Four patients with accommodative spasm and ten healthy subjects were studied. The ocular refractive power (spherical equivalent) and spherical aberration were measured serially with an open-field, binocular Hartmann–Shack wavefront aberrometer. Patients and subjects wore full-correction lenses and were instructed to fixate a target set at 50 cm from the eye. The time-average of the refractive power, spherical aberration, and fluctuations of accommodation analyzed by the fast Fourier transform (FFT) of the two groups were compared.

Results

The average ± standard deviation refractive power in the patients was significantly more negative than that in the healthy subject (−3.12 ± 1.06 vs. −1.49 ± 0.17 D). The integrated intensity of the FFT from 1 to 4 Hz was significantly higher in the patients than in the healthy subjects. The spherical aberration in patients was more negative than that in the healthy subjects (−0.033 ± 0.048 μm vs. 0.002 ± 0.027 μm).

Conclusions

Eyes with accommodative spasm are characterized by a lead of accommodation with greater fluctuations and negative spherical aberrations. Excessive accommodation can be measured objectively in such eyes with a binocular wavefront aberrometer without cycloplegics.

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Acknowledgments

This work was supported by the Grants-in-Aid Scientific Research (No. 19209053) from the Ministry of Education, Culture, Sports, Science and Technology, Japan.

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Authors and Affiliations

  1. Department of Applied Visual Science, Osaka University Graduate School of Medicine, Suita, Osaka, Japan

    Hiroyuki Kanda, Takeshi Morimoto & Takashi Fujikado

  2. Topcon Co., Tokyo, Japan

    Mariko Kobayashi & Toshifumi Mihashi

  3. Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan

    Kohji Nishida

Authors
  1. Hiroyuki Kanda
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  2. Mariko Kobayashi
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  3. Toshifumi Mihashi
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  4. Takeshi Morimoto
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  5. Kohji Nishida
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  6. Takashi Fujikado
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Corresponding author

Correspondence to Takashi Fujikado.

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Cite this article

Kanda, H., Kobayashi, M., Mihashi, T. et al. Serial measurements of accommodation by open-field Hartmann–Shack wavefront aberrometer in eyes with accommodative spasm. Jpn J Ophthalmol 56, 617–623 (2012). https://doi.org/10.1007/s10384-012-0187-7

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  • DOI: https://doi.org/10.1007/s10384-012-0187-7

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