In the majority of eyes the vitreous separates "cleanly" from the retina during PVD. Such "uncomplicated" PVD is common and is usually of no pathological significance. Unfortunately, on rare occasions, the collapsing vitreous causes a retinal "tear" to form at a point of abnormally strong adhesion between vitreous and retina, for example within an area of lattice degeneration or retinal tufts. There might even be an associated vitreous haemorrhage, when the PVD causes the avulsion of a peripheral retinal blood vessel.
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