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  • Title: Evaluation of posterior vitreous detachment using ultrasonography and optical coherence tomography.
    Author: Moon SY, Park SP, Kim YK.
    Journal: Acta Ophthalmol; 2020 Feb; 98(1):e29-e35. PubMed ID: 31301107.
    Abstract:
    PURPOSE: To compare the diagnostic ability of ultrasonography (US) and optical coherence tomography (OCT) in evaluating posterior vitreous detachment (PVD) status. METHODS: In total, 124 eyes in 63 patients were prospectively enrolled. Posterior vitreous detachment (PVD) status was evaluated by two examiners independently using US and OCT (transverse scan with/without peripapillary scan). By combining all examination results from both examiners, a final agreement on the PVD status was made. Inter-observer agreement and inter-examination agreement on PVD detection were evaluated. RESULTS: The inter-observer agreement on PVD grading based on US was substantial (kappa = 0.628). The inter-observer agreement on PVD grading based on OCT was almost perfect (transverse and peripapillary scan, kappa = 0.893; transverse scan only, kappa = 0.923). The PVD grading based on transverse and peripapillary OCT perfectly matched the final PVD grading (kappa = 1.00). The PVD grading made based on US and transverse scan only showed almost perfect agreement with the final PVD grading (US, kappa = 0.834; transverse scan only, kappa = 0.906). CONCLUSION: Both US and OCT could accurately evaluate PVD. The interpretation of the US images was more subjective, leading to lower inter-examiner agreement than that of the OCT. By adding peripapillary OCT scan images, the diagnostic ability of OCT was improved.
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