J Korean Ophthalmol Soc.  2008 Jan;49(1):169-176. 10.3341/jkos.2008.49.1.169.

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

• Lim HJ
• Bae MC
• Park JW
• Cho YW
• Park DJ

• KMID: 2211201
• DOI: http://doi.org/10.3341/jkos.2008.49.1.169

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.

Keyword

Choroidal osteoma; Multifocal electroretinography; Optical coherence tomography

MeSH Terms

Choroid
Electroretinography
Eye
Humans
Osteoma
Retinal Detachment
Retinaldehyde
Tomography, Optical Coherence
Retinaldehyde

Figure

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  Figure 1. (A) Fundus photograph of the right eye shows large, well-demarcated, round, yellow-white lesion involving the peripapillary area and macula. (B) Early fluorescein angiogram of the right eye demonstrates hyperfluorescence due to window defect corresponding to choroidal lesion. (C) Late fluorescein angiogram of the right eye demonstrates hyperfluorescence without leakage.

• 

  Figure 2. (A) A-scan ultrasonography demonstrates the high-intensity echo spike corresponding to the anterior surface of choroidal osteoma. (B) B-scan ultrasonography demonstrates the slightly elevated, highly reflective choroidal mass and posterior acoustic shadowing. (C), (D) Computed tomography shows dense choroidal lesion having the density of normal bone.

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  Figure 3. (A) The visual field of the right eye shows a defect relatively small compared to lesion size. (B) The visual field of the left eye. (C) Optical coherence tomography of the right eye corresponding to the scanning line shown in the fundus photograph shows serous retinal detachment in the macula and thick, irregular plate-like structure with high reflectivity in choroidal mass lesion. (D) Optical coherence tomography of the left eye.

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  Figure 4. Multifocal electroretinography. (A) Trace arrays of the right eye show suppression of central and peripheral signal especially in the central lesion compared with unaffected left eye. (B) Ring averages of the right eye show reduced amplitude in all locations in comparison with unaffected left eye. (C) 3D-Topography of the response density in the right eye shows marked suppression of the central signal and no foveal peak in comparison with unaffected left eye.

Reference

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