Posterior Vitreous Detachment

From All About Vision

In most cases, posterior vitreous detachment is caused by normal aging changes in the eye. With time, the vitreous contracts or shrinks, and also becomes less like a gel and more like a liquid (a process called vitreous syneresis). When this occurs, the vitreous and collagen fibers within it, pull away from and eventually detach from the retina.

Other causes of PVD include:

Posterior vitreous detachment is diagnosed through a comprehensive eye exam. Expect a dilated eye examination. This adds time to the eye exam and disrupts vision for 4-6 hours, but is necessary in order to get a good view of the retina.

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