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Nathan Schuck, Morgan Heisler, Marinko V Sarunic, Eduardo Vitor Navajas; Analysis of retinal nerve fiber layer and radial peripapillary capillaries after internal membrane peeling for full thickness macular hole using optical coherence tomography (OCT) angiography and adaptive optics OCT.. Invest. Ophthalmol. Vis. Sci. 2019;60(9):5762.
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© ARVO (1962-2015); The Authors (2016-present)
To evaluate the retinal peripapillary capillaries and nerve fiber layer in patients with inner retinal dimples (IRD) after internal limiting membrane (ILM) peeling for full thickness macular hole (FTMH) utilizing adaptive optics OCT (AO-OCT) and swept source OCT-angiography (ssOCT-A).
5 eyes of 5 patients with idiopathic FTMH were enrolled in the study. Patients were treated with pars plana vitrectomy, ILM peeling and gas tamponade. Subjects with at least 12 months of postoperative follow up were included in the study. Patients underwent a comprehensive ophthalmologic examination, en-face OCT, ssOCT-A (Plex Elite 9000) and custom built 1060nm 200kHz AO-OCT. AO-OCT was utilized to image the retinal nerve fiber layer (RNFL) in areas of IRD and in the transition between peeled and non peeled retina. SsOCT-A was used to evaluate the radial peripapillary capillaries (RPC) around the nerve and in the macular area. Peripapillary and macular RNFL thickness was measured by spectral domain OCT in all patients.
Inner retinal dimples (IRDs) were identified in all cases. The number and proportionate area of IRDs showed no significant change between 6 and 12 months (p=0.05) postoperatively. RNFL analysis with AO-OCT showed nerve fiber bundles wrapping around the IRDs. No obvious loss of RPC was seen with ssOCT-A.
The absence of both RPC and retinal nerve fiber bundle loss indicates that IRD development after ILM peeling is not a result of damage to these structures.
This abstract was presented at the 2019 ARVO Annual Meeting, held in Vancouver, Canada, April 28 - May 2, 2019.
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