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Purpose: Internal limiting membrane (ILM) flap techniques are used for the management of macular holes (MHs). Status of the flap after surgery often is uncertain. The current study evaluated the status of the ILM flap after MH surgery with superior wide-base ILM flap transposition (SWIFT).
Design: Retrospective consecutive case series.
Participants: Eyes undergoing SWIFT for MH.
Methods: Data were collected on demographic characteristics, preoperative and postoperative visual acuity (VA), and MH status. OCT and indocyanine green (ICG) fluorescence were used to evaluate the MH and the ILM flap status.
Main Outcome Measures: Status of MH, ILM flap position, and ILM flap integrity.
Results: Seventeen eyes of 17 patients with a mean age of 65.3 years and mean follow-up of 11.6 months were included in the study. Thirteen eyes had 1 or more high-risk characteristics. Four eyes (24%) were highly myopic, 6 eyes (35%) had chronic MH, and 3 eyes (18%) had a history of prior MH surgery and ILM removal. The mean MH basal diameter was 899.4 μm and the mean inner diameter was 516.1 μm. In 6 eyes, the MH inner diameter was 650 μm. The baseline mean VA equivalent was 0.88 logarithm of the minimum angle of resolution (logMAR). The MH closed in 16 eyes (94%). Indocyanine green fluorescence imaging demonstrated complete coverage of the MH by the ILM flap in 14 eyes (82%), partial coverage in 1 eye (6%), and no coverage in 2 eyes (12%). In the 2 eyes without ILM flap coverage, the MH was closed in 1 eye and remained open in 1 eye. Non-center-involving folding of the ILM flap was present in 4 eyes (24%). At the last follow-up visit, the mean VA equivalent was 0.54 logMAR.
Conclusions: Superior wide-base ILM flap transposition is a useful technique for the management of high-risk MHs, including persistent MHs with previously removed ILM. After surgery, the ILM flap may be visualized by ICG fluorescence imaging. After SWIFT, ICG imaging indicates that the ILM flap is intact and in a good position in most cases.
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Source |
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http://dx.doi.org/10.1016/j.oret.2020.12.003 | DOI Listing |
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