Abnormal multifocal electroretinogram (mfERG) in ethambutol toxicity
- PMID: 17182409
- DOI: 10.1080/08820530600987454
Abnormal multifocal electroretinogram (mfERG) in ethambutol toxicity
Abstract
Objective: To report the abnormal multifocal electroretinogram (mfERG) findings in two cases of presumed ethambutol toxicity.
Design: Retrospective observational case series.
Participants: Two patients with ethambutol toxicity and visual loss.
Testing: Multifocal electroretinography.
Main outcome measure: Waveform measurements on multifocal electroretinography.
Results: Two patients with bilateral visual loss due to ethambutol toxicity underwent mfERG testing that disclosed both diffuse and central field loss compatible with retinal dysfunction as a contributing mechanism to the visual field loss.
Conclusion: Ethambutol toxicity affects not only the optic nerve but probably other retinal elements based upon abnormal mfERG findings.
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