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Epidemiologic study of rhegmatogenous retinal detachment in Japan from the Diagnosis Procedure Combination database over a 2-year period (2014–2015)

Abstract

Purpose

To determine the incidence of rhegmatogenous retinal detachments (RRDs) and proliferative vitreoretinopathies (PVRs) and their distribution by age and sex in hospitalized patients in Japan.

Study design

Retrospective nationwide observational study.

Methods

Information on the number of inpatients primarily diagnosed with RRD or PVR and their age and sex were collected from the Diagnosis Procedure Combination (DPC) database for 2014 and 2015. The incidence was determined using the Japanese population report published by the Public Management Ministry’s Statistics Bureau.

Results

The incidence of RRD in these hospitalized patients was 10.9/100,000, with 15.0/100,000 in men and 7.1/100,000 in women, and that of PVR was 2.1/100,000, with 2.9/100,000 in men and 1.3/100,000 in women. The incidence in men was twice that in women for both RRD and PVR. The distribution of RRD by age was monophasic, with a peak at 50 years for both sexes, and that of PVR was at peak in the 60 s for men and in the 70 s for women. PVR was more common than RRD in children aged younger than 10 years, but the incidence of RRD was higher in the other age groups.

Conclusion

A study of the DPC database can provide useful information on the incidences of RRD and PVR in hospitalized patients in Japan.

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Acknowledgements

We thank Drs Ken Hayashi (Hayashi Eye Hospital, Fukuoka, Japan), Takaaki Matsui (Ohshima Eye Hospital, Fukuoka, Japan), and Kazushi Fujimoto (Fujimoto Eye Clinic, Fukuoka, Japan) for providing medical practice data. We also thank Duco Hamasaki, Professor Emeritus, Bascom Palmer Eye Institute, University of Miami, for his critical comments and valuable assistance.

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Correspondence to Hiroyuki Kondo.

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Conflicts of interest

K. Oku, None; K. Tokutsu, Consultant fee (ASTEM); S. Matsuda, Consultant fee (YAGAMI), Lecture fee (Chugai); H. Kondo, Lecture fee (Santen, Bayer, Kowa, Senju, Otsuka, RE Medical), Grant, Lecture fee (Alcon, AMO, Novartis,).

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Corresponding Author: Hiroyuki Kondo

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Oku, K., Tokutsu, K., Matsuda, S. et al. Epidemiologic study of rhegmatogenous retinal detachment in Japan from the Diagnosis Procedure Combination database over a 2-year period (2014–2015). Jpn J Ophthalmol (2021). https://doi.org/10.1007/s10384-021-00867-z

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Keywords

  • Epidemiologic studies
  • Rhegmatogenous retinal detachment
  • Proliferative vitreoretinopathy
  • Diagnosis Procedure Combination (DPC)
  • Japanese