Many developmental defects can simulate the optic disc (optic disc pseudodoubling) including peripapillary coloboma and scarring (1–3). True optic disc duplication with 2 independent retinal vasculatures is rare (4).
We document such a case in the asymptomatic left eye of a 41-year-old man (Fig. 1). Visual acuity was 20/20 bilaterally, and pupillary reactions were normal, as were anterior segment examinations and the right fundus appearance. The patient's general health was excellent, and medical history was unremarkable.
1. Islam N, Best J, Mehta JS, Sivakumar S, Plant GT, Hoyt WF. Optic disc duplication or coloboma? Br J Ophthalmol. 2005;89:26–29.
2. Young S, Ng JK, Gaynon MW. Pseudo duplication of the optic disk. Retinal Cases & Brief Reports. 2011;5:144–145.
3. Barboni P, Deluigi M, Bonis CD, Monetti G, Savini G, Zanini M. Pseudodoubling of the optic disc. Arch Ophthalmol. 1998;116:1400–1401.
4. Lamba PA. Doubling of the papillae. Acta Ophthalmologica. 1969;47:4–9.