Wide-field montage image of spectral domain optical coherence tomography in polypoidal choroidal vasculopathy.

Montage techniques using SD-OCT have been tried in idiopathic macular holes,[1] normal subjects, diabetic retinopathy and Vogt-Koynagi-Harada disease.[2] We present a wide-field montage image from macula to the fundus periphery in a case of polypoidal choroidal vasculopathy (PCV) by using spectral domain optical coherence tomography (SD-OCT) [Fig. 1a]. While the SD-OCT features in the macula for PCV are well defined [Fig. 1b and c], there is a paucity of data concerning the peripheral SD-OCT changes. Merging the SD-OCT the scan length obtained was 26 mm. This enables us to visualize the pathology in relation to other retino-choroidal areas and the optic disc. This helps us study the peripheral changes in a single image. Advantages include no additional costs, large scan length, and more information in a single image. This manual technique is time consuming, automated algorithms, and swept-source imaging[3] with wider scans may overcome this issue.

Figure 1

Combined SD-OCT and multicolor image (a) montage SD-OCT showing the large pigment epithelial detachment nasal to the fovea with hyper reflective double layer sign, (b) a 3-Dimensional slab, and (c) a 200 degrees fundus image (Optos PLC, Dunfermline, Scotland, UK)

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Conflicts of interest

There are no conflicts of interest.