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Effect of fluid-air exchange on reducing residual silicone oil after silicone oil removal

  • Retinal Disorders
  • Published:
Graefe's Archive for Clinical and Experimental Ophthalmology Aims and scope Submit manuscript

Abstract

Purpose

Our purpose was to determine the effect of fluid-air exchange on the amount of silicone oil (SO) droplets remaining in the vitreous cavity after removal of the main body of the SO.

Methods

This was a retrospective comparative study of 56 eyes of 56 patients that had undergone vitrectomy with SO tamponade. Fluid-air exchange was performed during surgery in 30 eyes [Air Ex(+) group] and was not done in 26 eyes [Air Ex(−) group]. All of the eyes were examined by ultrasonography, and the images were converted to binarized image. The amount of residual SO droplets/vitreal area in the images was expressed as the, “silicone oil index (SOI)”. The correlations between SOI and clinical findings were determined.

Results

The SOI was significantly correlated with the axial length (AL, R = 0.444, P = 0.023). The SOI in the Air Ex(+) group was significantly higher (7.4 ± 2.6%) than in the Air Ex(−) group (4.9 ± 3.4%; P = 0.004). Multiple linear regression analyses showed that the SOI was independently and significantly correlated with the AL and the Air Ex(+) group (P = 0.003, P = 0.006, respectively).

Conclusions

Fluid-air exchange during vitrectomy to remove residual SO is not effective. Our findings indicate that it may increase the amount of residual SO droplets.

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Acknowledgements

The authors thank Professor Emeritus Duco Hamasaki, of the Bascom Palmer Eye Institute of the University of Miami for providing critical discussions and suggestions to our study and revision of the final manuscript. The authors also thank Keita Yamakiri, MD, PhD, Hiroki Otsuka, MD, PhD, Tetsuo Ueda, MD, Hiroki Tsujinaka, MD, Kentaro Semba, MD, PhD, Takashi Katome, MD, PhD for their surgical contributions.

Author information

Authors and Affiliations

  1. Department of Ophthalmology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan

    Hideki Shiihara, Taiji Sakamoto, Hiroto Terasaki, Takehiro Yamashita, Naoya Yoshihara, Toshifumi Yamashita & Shozo Sonoda

  2. Tsukuba University Graduate School of Medicine, Tsukuba, Japan

    Fumiki Okamoto

  3. Department of Ophthalmology, Nara Medical College, Nara, Japan

    Nahoko Ogata

  4. Department of Ophthalmology, Tokushima University Graduate School, Tokushima, Japan

    Yoshinori Mitamura

Authors
  1. Hideki Shiihara
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  2. Taiji Sakamoto
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  3. Hiroto Terasaki
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  4. Takehiro Yamashita
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  5. Naoya Yoshihara
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  6. Fumiki Okamoto
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  7. Nahoko Ogata
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  8. Toshifumi Yamashita
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  9. Shozo Sonoda
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  10. Yoshinori Mitamura
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Corresponding author

Correspondence to Taiji Sakamoto.

Ethics declarations

The procedures used in this study were approved by the Institutional Review Board of Kagoshima University Hospital, and the procedures conformed to the tenets of the 1989 Declaration of Helsinki.

Informed consent

Informed consent was obtained from all individual participants included in the study.

Funding

The funding organizations had no role in the design or conduct of this research. This study was in part supported by JSPS Grant-in-Aid for Scientific Research.

Conflict of interest

The authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest or non-financial interest in the subject matter or materials discussed in this manuscript.

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Shiihara, H., Sakamoto, T., Terasaki, H. et al. Effect of fluid-air exchange on reducing residual silicone oil after silicone oil removal. Graefes Arch Clin Exp Ophthalmol 255, 1697–1704 (2017). https://doi.org/10.1007/s00417-017-3701-2

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  • DOI: https://doi.org/10.1007/s00417-017-3701-2

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