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Clinical science
Factors associated with diplopia before and after orbital blowout fracture reconstruction
  1. Hiroaki Oku1,
  2. Akihide Watanabe1,
  3. Saul N Rajak2,
  4. Tomomichi Nakayama1,
  5. Akiko Yoneda3,4,
  6. Kengo Yoshii5,
  7. Chie Sotozono6
  1. 1 Department of Ophthalmology, Kyoto Prefectural University of Medicine, Kyoto, Japan
  2. 2 Sussex Eye Hospital, Brighton, Brighton and Hove, UK
  3. 3 Kyoto Prefectural University of Medicine, Kyoto, Japan
  4. 4 Seirei Hamamatsu General Hospital, Hamamatsu, Japan
  5. 5 Department of Mathematics and Statistics in Medical Sciences, Kyoto Prefectural University of Medicine, Kyoto, Japan
  6. 6 Ophthalmology, Kyoto Prefectural University of Medicine, Kyoto, Japan
  1. Correspondence to Dr Hiroaki Oku; h-oku{at}koto.kpu-m.ac.jp

Abstract

Background/Aims To ascertain factors associated with persistent diplopia after orbital fracture reconstruction.

Methods In this retrospective study, we reviewed 798 cases with depressed fragment fracture at the Department of Kyoto Prefectural University of Medicine Hospital between January 2009 and November 2023. The restriction of extraocular movements and diplopia was assessed using the Hess area ratio (HAR). The factors for HAR% ≥85% before surgery and 6 months after surgery were assessed.

Results Of the 798 cases in this study, 437 cases (54.8%) had an HAR% of ≥85%, and 361 cases (45.2%) had an HAR% of <85% before surgery. Age ≤18 years old (p=0.017), orbital tissue herniation volume <median (p=0.001), absence of extra-ocular muscle deviation (p<0.001) and medial wall (vs medial wall and orbital floor with strut fracture; p<0.001) were found to be associated with HAR% ≥85% before surgery. Of the 332 cases treated with surgery, 272 cases (81.9%) were HAR% ≥85%, and 60 cases (18.1%) were HAR%<85% after surgery. Age ≤18 years old (p=0.011), male (p=0.014), absence of extra-ocular muscle deviation (p=0.002) and medial wall (vs medial wall and orbital floor with strut fracture; p=0.002) were found to be associated with HAR% ≥85% at 6 months post surgery.

Conclusion Patients of younger age, male and those with absence of extraocular muscle deviation have better eye movements in the affected eye (increased HAR%) 6 months after surgery.

  • Orbit
  • Trauma
  • Treatment Surgery
  • Imaging

Data availability statement

Data sharing not applicable as no datasets generated and/or analysed for this study. No data are available.

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Data availability statement

Data sharing not applicable as no datasets generated and/or analysed for this study. No data are available.

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Footnotes

  • Contributors Guarantor (HO), conception and design of the study (HO, AW, CS), collection of data (HO), management of data (HO, AW), analysis of data (HO, KY), interpretation of data (AW), writing of the article (HO, AW, SR, CS), approval of the manuscript (HO, AW, SR, AY, TN, KY, CS) and searching the literature (HO).

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer-reviewed.

  • Supplemental material This content has been supplied by the author(s). It has not been vetted by BMJ Publishing Group Limited (BMJ) and may not have been peer-reviewed. Any opinions or recommendations discussed are solely those of the author(s) and are not endorsed by BMJ. BMJ disclaims all liability and responsibility arising from any reliance placed on the content. Where the content includes any translated material, BMJ does not warrant the accuracy and reliability of the translations (including but not limited to local regulations, clinical guidelines, terminology, drug names and drug dosages), and is not responsible for any error and/or omissions arising from translation and adaptation or otherwise.