Middle aged patient, who presented to the Emergency Room department with ocular trauma from a wooden log.
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Unenhanced axial CT scan shows complete posterior dislocation of the right lens.
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Blunt trauma typically displaces the cornea and anterior sclera posteriorly making a deformation of the globe.The deformation causes the complete (in these case) or partial rupture of zonular attachments. After complete rupture, the lens dislocates almost always posteriorly, but less commonly anteriorly.
Nontraumatic lens dislocation can occur in systemic connective tissue disorders, e.g. Marfan syndrome, Ehlers-Danlos syndrome and homocystinuria.
- Imaging of Orbital Trauma. Wayne S. Kubal, MD. RadioGraphics 2008; 28:1729–1739 http://pubs.rsna.org/doi/pdf/10.1148/rg.286085523