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Improvement of siderotic ERG
F Kuhn1, C D Witherspoon, H Skalka
1University of Alabama, Eye Foundation Hospital Combined Program in Ophthalmology, Birmingham.
European Journal of Ophthalmology
|January 1, 1992
Summary
Prompt removal of intraocular foreign bodies is standard practice. However, this case shows significant recovery from siderosis, suggesting watchful waiting may be an option if siderosis is absent.
Area of Science:
- Ophthalmology
- Medical Imaging
- Neuroscience
Background:
- Ferrous intraocular foreign bodies typically require immediate removal due to risks of endophthalmitis and siderosis.
- Siderotic electroretinogram (ERG) changes, indicative of iron toxicity, are generally considered irreversible.
Observation:
- A patient presented with a chronically retained intravitreal foreign body.
- The patient exhibited notable clinical and electrophysiologic signs of siderosis.
Findings:
- Following surgical removal, the patient's ERG showed nearly complete recovery within three months.
- This suggests that siderotic ERG changes may be reversible in some cases.
Implications:
- In the absence of siderosis, conservative management with regular follow-up may be a viable alternative to immediate surgery for intraocular foreign bodies.
- This challenges the conventional approach and highlights the potential for visual recovery even after prolonged exposure.