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Factors impacting gas fill after microincision vitrectomy surgery combined with fluid–gas exchange

1 Department of Ophthalmology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
2 Department of Health-Business Administration, Fooyin University, Kaohsiung, Taiwan
3 Department of Ophthalmology, Kaohsiung Veterans General Hospital; Department of Ophthalmology, School of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan

Correspondence Address:
Shwu-Jiuan Sheu,
Department of Ophthalmology, Kaohsiung Medical University, No. 100, Tzyou 1st Road, Sanmin District, Kaohsiung City 80756
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/tjo.tjo_1_19

PURPOSE: The objective of the study was to investigate possible factors influencing gas fill after microincision vitrectomy surgery (MIVS) combined with fluid–gas exchange. MATERIALS AND METHODS: This was a retrospective chart review of patients who underwent MIVS combined with fluid–gas exchange (20% C3F8) from February 2017 to December 2017. RESULTS: Sixty-one eyes of 58 patients were identified. The mean age was 59.97 ± 9.65 years. The mean gas fill percentage was 76.28% ± 14.29% on day 1, 65.49% ±13.65% on day 3, 60.03% ± 14.53% on day 4, and 43.9% ± 20.88% on day 7 postoperatively. Compared to phakic eyes, eyes that were pseudophakic prior to surgery had a lower gas fill on days 1–3, but the difference did not reach significance on day 3. Eyes that underwent phacovitrectomy had a significantly lower gas fill on days 1–3 than eyes that did not. CONCLUSION: Postoperative pseudophakic status is associated with lower gas fill after MIVS. Adjusted gas fill should be considered in these cases.

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