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首页> 外文期刊>Retina >Extending the Limbus-to-Cannula Distance to 6.0 mm During Pars Plana Vitrectomy in Highly Myopic Eyes
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Extending the Limbus-to-Cannula Distance to 6.0 mm During Pars Plana Vitrectomy in Highly Myopic Eyes

机译：Extending the Limbus-to-Cannula Distance to 6.0 mm During Pars Plana Vitrectomy in Highly Myopic Eyes

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Purpose: To evaluate the utility of extending the limbus-to-cannula distance to 6.0 mm during pars plana vitrectomy for highly myopic eyes. Methods: Four eyes with axial lengths exceeding 31.0 mm, that underwent 25-gauge pars plana vitrectomy were retrospectively evaluated. Assuming that cannulas were inserted 3.5 mm and 6.0 mm from the corneal limbus, the distance from the cannula to the fovea (CF distance) was preoperatively evaluated using anterior segmental optical coherence tomography. Surgical complications were also investigated. Results: The CF distance was shortened by 1.22 +/- 0.05 mm and 1.22 +/- 0.09 mm on the temporal and nasal sides, respectively, by inserting the cannula at 3.5 mm to 6.0 mm from the corneal limbus. As per the preoperatively measured CF distance, one of the cannulas was inserted 6.0 mm from the corneal limbus in three eyes. Their cannulas were confirmed to be inserted at the pars plana, and no surgical complications associated with this technique were observed. Conclusion: Extending the limbus-to-cannula distance to 6.0 mm during pars plana vitrectomy could be one of the options to reach the posterior pole in highly myopic eyes. A preoperatively measured CF distance can be a clinical criterion in determining the cannula position.

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