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Article Abstract
Purpose: To introduce a novel method to quantitively analyse in three dimensions traction forces in a vast area of the ocular posterior pole.
Methods: Retrospective analysis of 14 eyes who underwent peeling surgery for idiopathic, symptomatic and progressive epiretinal membrane. The technique measures the shift in position of vascular crossings after surgery from a fixed point, which is the retinal pigmented epithelium. This shift is defined as the relaxation index (RI) and represents a measure of the postoperative movement of the retina due to released traction after surgery.
Results: Best-corrected visual acuity was significantly better than baseline at all follow ups while the RI had its maximum value at baseline. Moreover, we found a significant correlation between best-corrected visual acuity at 6 months and RI at baseline.
Conclusion: While all previous published methods focused on bi-dimensional changes observed in a small region, this study introduces a three-dimensional assessment of tractional forces. Future integration of RI into built-in processing software will allow systematic three-dimensional measurement of intraretinal traction.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7968655 | PMC |
| http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0247192 | PLOS |
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