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ARTEFACTUALLY DAMPENED FLASH STIMULUS VISUAL EVOKED RESPONSES IN A SILICONE OIL-FILLED EYE.
Retinal Cases & Brief Reports 2017 August 19
PURPOSE: To report a case of falsely dampened visual evoked responses in a patient of Usher syndrome after retinal detachment surgery secondary to probable intraocular silicone oil.
METHODS: Retrospective observational case report.
CASE DESCRIPTION: A 16-year-old boy with Usher syndrome developed rhegmatogenous retinal detachment in the left eye. He underwent a successful retinal detachment surgery with silicone oil tamponade. On his postoperative follow-up visit, poor vision was noted by our optometrist. A flash stimulus visual evoked response was done, which showed marked delayed latency and reduced amplitude. Marked improvement in the flash stimulus visual evoked response potentials and waveforms was noted after silicone oil removal.
CONCLUSION: Intraocular silicone oil could be responsible for this false delay in the latency and reduction in flash stimulus visual evoked response amplitudes. Assessment of flash stimulus visual evoked responses in the presence of silicone oil after vitreoretinal surgery may produce unreliable responses.
METHODS: Retrospective observational case report.
CASE DESCRIPTION: A 16-year-old boy with Usher syndrome developed rhegmatogenous retinal detachment in the left eye. He underwent a successful retinal detachment surgery with silicone oil tamponade. On his postoperative follow-up visit, poor vision was noted by our optometrist. A flash stimulus visual evoked response was done, which showed marked delayed latency and reduced amplitude. Marked improvement in the flash stimulus visual evoked response potentials and waveforms was noted after silicone oil removal.
CONCLUSION: Intraocular silicone oil could be responsible for this false delay in the latency and reduction in flash stimulus visual evoked response amplitudes. Assessment of flash stimulus visual evoked responses in the presence of silicone oil after vitreoretinal surgery may produce unreliable responses.
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