Dr. Paras Khatwani

Dr. APOORVA A.G., Prof.A.S. GURUPRASAD, Dr.SHRINIVAS M. JOSHI

Abstract

We present seven cases of Multi Color Imaging (MC) in Optic Disc Melanocytoma (ODM). Unique features of MC imaging seen were- different shades of red based on the depth of ODM – which we termed as “Dart – Board” sign. One case showed choroidal invasion which revealed yellowish hue instead of red; that was indistinguishable on Color Fundus Photograph (CFP) from the bulk of ODM mass. CFP only showed different shades of black in this case. MC imaging in 2 cases also showed feathery margins which were sharper when compared to their appearance on CFP. Disc edema was seen in 2 cases as greenish hue surrounding ODM. MC imaging has potential in determining height of ODM, disc and choroidal invasion which can suggest transformation into melanoma. CFP is flash – based and hence cannot show the unique distinctive features seen on MC imaging. MC imaging in our series showed the above findings by virtue of being wavelength – dependent.

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