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Traumatic lens subluxation
Ocular Trauma
Key Points
- •Trauma is the most common cause of unilateral lens subluxation; bilateral subluxation should prompt investigation for Marfan syndrome or homocystinuria
- •Phacodonesis (lens wobble) and iridodonesis (iris wobble) are pathognomonic signs of zonular disruption
- •Anterior lens dislocation is an emergency - causes pupillary block glaucoma; treat with dilation (NOT miotics) and urgent surgical extraction
- •Direction of subluxation: trauma = away from impact; Marfan = superotemporal; homocystinuria = inferonasal
- •Capsular tension ring (CTR) is the key surgical adjunct for subluxed lens with ≤180° of zonular loss - it enables safe in-the-bag IOL placement
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17 more sections are included with the Clinical plan.
- Definition
- Epidemiology
- Aetiology and causes
- Pathogenesis
- Classification
- Risk factors and associations