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Partial Vitreous Separation In A High Myope With A Posterior

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Uploaded on Apr 8, 2010

This B-scan demonstrates a partial PVD. A posterior vitreous detachment (PVD) may occur in a normal aging eye or may be associated with pathology such as vitreous hemorrhage or inflammation. In a normal eye, as in this example, the PVD appears as a thin and smooth line (arrow) on B-scan. When the globe is moved voluntarily by the patient, real time echography demonstrates a quick jerky motion of the sheet-like echo with movements continuing after the globe movement has ceased. This is helpful in differentiating a PVD from a retinal detachment, which typically has a slower undulating pattern of motion. If there was presence of blood or inflammatory debris associated with the PVD, the echogenic line might appear thicker, especially in the most gravity dependent portions of the globe (i.e., posterior and inferior).

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