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Related Experiment Videos

Variations of Weiss's ring.

J Akiba1, S Ishiko, A Yoshida

  • 1Department of Ophthalmology, Asahikawa Medical College, 2-1-1-1 Midorigaoka Higashi, Asahikawa 078-8510, Japan. jakiba@iris.ocn.ne.jp

Retina (Philadelphia, Pa.)
|June 26, 2001
PubMed
Summary
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Weiss's ring, a key indicator of posterior vitreous detachment (PVD), shows varied configurations beyond a simple ring. These variations, including partial rings and opacities, are consistently observed over time.

Area of Science:

  • Ophthalmology
  • Retinal Imaging
  • Vitreoretinal Interface

Background:

  • Weiss's ring is a diagnostic marker for posterior vitreous detachment (PVD).
  • The morphology of Weiss's ring exhibits significant variations.

Purpose of the Study:

  • To investigate and classify the diverse configurations of Weiss's ring in eyes with PVD.
  • To assess the stability of Weiss's ring morphology over time.

Main Methods:

  • Biomicroscopic examination and videography using a scanning laser ophthalmoscope were performed on 223 eyes with PVD.
  • Weiss's ring configurations were categorized into four distinct groups: complete ring, partial ring, ball-like opacity, and hole without a ring.

Main Results:

  • Partial rings were the most common configuration (57.4%), followed by complete rings (28.3%), ball-like opacities (7.6%), and holes without rings (6.7%).

Related Experiment Videos

  • The contour of Weiss's ring remained stable in 96.6% of eyes with fresh PVD after six months.
  • Specific configurations showed correlations with refractive error (hyperopia, emmetropia, myopia).

    • Conclusions:

    • The term "ring" may be inaccurate as "classic" annular opacities constitute less than one-third of observed configurations.
    • Scanning laser ophthalmoscopy is an effective tool for visualizing and documenting Weiss's ring variations.
    • Understanding these variations is crucial for accurate PVD diagnosis and management.