Abstract
PurposeTo report a new spectral domain optical coherence tomography (OCT) finding called the pigtail sign. It was found during follow-up of idiopathic macular hole cases after inverted internal limiting membrane (ILM) flap surgery.MethodsThis is a retrospective case series of 12 eyes (12 patients) who underwent inverted ILM flap technique for idiopathic macular hole closure. Spectral domain optical coherence tomography images were analyzed for the presence of this new finding.ResultsA new spectral domain OCT finding of a curved coiled line hanging above the surface of the retinal layers was seen in all patients. The mean preoperative best corrected visual acuity (BCVA) logMAR value was 1.25 ± 0.11. At the 6-month follow-up visit, the mean LogMAR BCVA was 0.35 ± 0.18. All the cases showed macular hole closure after surgery.ConclusionThis new spectral domain OCT sign can be seen in some OCT scans during follow-up of idiopathic macular hole cases after inverted ILM flap surgery.
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