What sign is indicative of Posterior Vitreous Detachment (PVD)?

The Weiss ring is indicative of Posterior Vitreous Detachment (PVD) because it represents a specific clinical manifestation where the vitreous gel separates from the retina. As this detachment occurs, the collagen fibers in the vitreous may tear and create a ring-like shape, which can be seen during a retinal examination. This sign is particularly significant because it often correlates with the onset of PVD, and patients may report seeing this ring as a visual phenomenon, often described as a curtain or cloud moving across their field of vision.

Other options, while related to visual or eye issues, do not specifically indicate PVD. Visual field loss can result from various ocular or neurological conditions, not exclusively from PVD. Diplopia, or double vision, is typically associated with problems in ocular alignment or extraocular muscle deficits. Peripheral vision loss can occur due to glaucoma or retinal issues, but it is not a classic indication of PVD. Thus, the presence of a Weiss ring is a distinct and significant sign that suggests the occurrence of Posterior Vitreous Detachment.