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Regional comparison of preoperative biometry for cataract surgery between two domestic institutions

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Abstract

Purpose

Regional variations of the preoperative biometry can affect the refractive accuracy of cataract surgery. We aimed to compare the preoperative biometric data for cataract surgery between two domestic institutions.

Methods

We retrospectively reviewed the preoperative biometric data of 673 consecutive eyes undergoing standard cataract surgery at Miyata Eye Hospital (Miyazaki; M group) and Kitasato University Hospital (Kanagawa; K group), and compared these data between the two groups.

Results

We found significant differences in the mean keratometric readings (44.39 ± 1.56 D vs. 44.09 ± 1.74 D) (unpaired t test, p = 0.034), the anterior chamber depth (3.14 ± 0.43 mm vs. 3.46 ± 0.62 mm) (p < 0.001), the axial length (23.98 ± 1.62 mm vs. 24.59 ± 1.82 mm) (p < 0.001), and the lens thickness (4.64 ± 0.48 mm vs. 4.37 ± 0.62 mm) (p < 0.001), in the M and K groups, respectively. Otherwise, we found no significant differences in corneal astigmatism (p = 0.104), or central corneal thickness (p = 0.480) between the two groups. For subgroup analysis, the prediction error (0.06 ± 0.47 D) in the M group was significantly more hyperopic than that (− 0.09 ± 0.54 D) in the K group (p = 0.006).

Conclusions

There were significant differences in the mean keratometric readings, the anterior chamber depth, the axial length, and the lens thickness, by approximately 0.3 D, 0.3 mm, 0.6 mm, and 0.3 mm, respectively. Regional variations of the preoperative biometry did exist to some extent, and were not clinically negligible, in consideration of the precise IOL power calculation and the subsequent refractive accuracy of cataract surgery.

Trial registration

University Hospital Medical Information Network Clinical Trial Registry (000037994).

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Availability of data and material

The data that support the findings of the present study are available from the corresponding author upon reasonable request.

Code availability

Not applicable.

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Author information

Authors and Affiliations

  1. Visual Physiology, School of Allied Health Sciences, Kitasato University, Sagamihara, Kanagawa, Japan

    Kazutaka Kamiya & Fusako Fujimura

  2. Department of Ophthalmology, School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan

    Kei Iijima & Shoji Nobuyuki

  3. Department of Ophthalmology, Miyata Eye Hospital, Miyakonojo, Miyazaki, Japan

    Yosai Mori & Kazunori Miyata

Authors
  1. Kazutaka Kamiya
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  2. Fusako Fujimura
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  3. Kei Iijima
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  4. Shoji Nobuyuki
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  5. Yosai Mori
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  6. Kazunori Miyata
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Contributions

KK and KM were involved in the design and conduct of the study, KK, FF, KI, and YM were involved in collection, management, analysis, and interpretation of data, and KK, FF, KI, NS, YM, and KM were involved in preparation, review, and final approval of the manuscript.

Corresponding author

Correspondence to Kazutaka Kamiya.

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Conflict of interest

The authors declare that they have no conflict of interest.

Ethics approval

This retrospective review of the clinical charts was approved by the Institutional Review Boards of Kitasato University (C19-256) and Miyata Eye Hospital (CS 333-028), and followed the tenets of the Declaration of Helsinki.

Consent to participate

Our Institutional Review Board waived the requirement for informed consent for this retrospective study.

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Not applicable.

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Kamiya, K., Fujimura, F., Iijima, K. et al. Regional comparison of preoperative biometry for cataract surgery between two domestic institutions. Int Ophthalmol 40, 2923–2930 (2020). https://doi.org/10.1007/s10792-020-01476-4

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  • DOI: https://doi.org/10.1007/s10792-020-01476-4

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