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Ocular siderosis. Diagnosis and management
M J Weiss1, A J Hofeldt, M Behrens
1Edward S. Harkness Eye Institute, Columbia University, New York, New York, USA.
Retina (Philadelphia, Pa.)
|January 1, 1997
Summary
Ocular siderosis diagnosis and management are improved with ultrasonography for detecting intraocular foreign bodies, even when CT scans fail. Early detection and removal can lead to reversible vision improvements.
Area of Science:
- Ophthalmology
- Medical Imaging
- Ocular Trauma
Background:
- Ocular siderosis is a rare condition caused by retained iron-containing intraocular foreign bodies.
- Accurate diagnosis and management are crucial for preserving vision.
Observation:
- Three cases of ocular siderosis secondary to intraocular foreign bodies are presented.
- Computed tomography (CT) scanning and plain film radiography failed to detect the foreign body in two out of three cases.
- Ultrasonography successfully detected and localized intraocular foreign bodies in all three cases, particularly in the inferior retinal quadrants.
Findings:
- Ocular siderosis can present with a tonic or Adie's pupil.
- Preoperative electroretinogram (ERG) reductions up to 40% may be compatible with good vision.
- ERG amplitudes can normalize after successful removal of the intraocular foreign body.
Implications:
- Ocular siderosis should be considered in the differential diagnosis of tonic or Adie's pupil.
- B-mode echography is a valuable tool for detecting occult intraocular foreign bodies, especially when combined with careful examination of the inferior quadrants.
- Prompt removal of intraocular foreign bodies can lead to reversible visual function recovery in cases of ocular siderosis.