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Related Experiment Videos

Traumatic subluxation causing variable position of the crystalline lens.

Angela V P Loo1, Jimmy S M Lai, Clement C Y Tham

  • 1Department of Ophthalmology, Tseung Kwan O Hospital, Kowloon, Hong Kong.

Journal of Cataract and Refractive Surgery
|May 31, 2002
PubMed
Summary

Traumatic lens subluxation may only appear when lying down due to zonular rupture. Postural changes affect lens position, impacting preoperative assessments for phacodonesis and iridodonesis.

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Area of Science:

  • Ophthalmology
  • Trauma Surgery

Background:

  • Traumatic lens subluxation can occur due to zonular rupture.
  • Lens position can be influenced by patient posture.

Observation:

  • A case of traumatic lens subluxation was observed, primarily evident in the supine position.
  • The crystalline lens shifted position based on patient posture.

Findings:

  • Zonular rupture allows the lens to change position with postural changes.
  • In the erect position, the lens may be suspended superiorly, potentially causing phacodonesis.
  • In the supine position, the lens drops into the vitreous cavity.

Implications:

  • Routine examination in both erect and supine positions is crucial for preoperative assessment.

Related Experiment Videos

  • This highlights the importance of considering positional changes in diagnosing traumatic lens instability.
  • Accurate diagnosis of phacodonesis and iridodonesis is vital for effective surgical planning.