Optical Coherence Tomography and Multifocal Electroretinography in a Patient with Choroidal Osteoma

ABSTRACT

PURPOSE: We present a case of choroidal osteoma and report a pattern of optical coherence tomography and multifocal electroretinography with a literature review. CASE SUMMARY: Using B-scan and CT, we performed OCT and MF-ERG in a patient diagnosed with choroidal osteoma. OCT revealed serous retinal detachment in the macula and a thick, irregular plate-like structure with high reflectivity in the choroidal mass lesion. MF-ERG demonstrated that Trace arrays show suppression of central and peripheral signals, especially in central lesions. Ring averages show reduced amplitudes in all locations, and 3D-topography of the response density shows marked suppression of the central signal and no foveal peak in comparison with the unaffected left eye. CONCLUSIONS: In patients with choroidal osteoma, OCT can reveal thick plate-like high reflectivity with an irregular outer surface, and MF-ERG can predict retinal dysfunction.