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Pseudoduplication of the optic disc

Published:September 12, 2022DOI:https://doi.org/10.1016/j.jcjo.2022.08.007
      A 43-year-old asymptomatic male was referred for a lesion adjacent to the right optic nerve. He denied any past ocular or medical history. Visual acuity was 20/20 OD and 20/20 OS. Dilated fundus examination revealed a yellow lesion inferior to the right optic nerve with otherwise normal nerve, vessels, and macula (Fig. 1A). Swept-source optical coherence tomography of the nerve OD demonstrated inferior peripapillary atrophy with hypertransmission (Fig. 1B). The visual field shows extension of the blind spot (Fig. 1C). This rare presentation represents a peripapillary coloboma mimicking optic disc duplication.
      Fig 1
      Fig. 1(A) Fundus photograph of the optic nerve of the right eye (Optos Silverstone SS-OCT, Optos PLC, Dunfermline, UK) demonstrating a yellow lesion inferior to the optic nerve with otherwise normal nerve, vessels, and macula. (B) Swept-source OCT (Topcon DRI Triton, Tokyo, Japan) of the optic nerve of the right eye demonstrating retinal atrophy inferior to the optic nerve and increased signal through the choroid. (C) Single-field analysis, 24-2 visual field of the right eye (PTS 2000, Optopol, Zawiercie, Poland) showing extension of the blind spot.
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