Unilateral Duplication of Optic Canal: A Case Report

Abstract

Optic canal is formed by two roots of lesserwing and body of sphenoid bone. It transmits optic nerve, ophthalmic artery and periarterial sympathetic plexus. During demonstration classes for undergraduate students we observed optic canal of left orbit of the adult skull, showing a thin spicule of bone which divided optic canal into two. Unilateral presence of duplicated optic canal is very rare. This case report may be useful for surgeons and radiologists.

Duplication of optic canal (a figure of eight anomaly) – case report with review of literature

“…Various authors conducted an extensive review of the duplicate optical canal (DOC) offers a sum number of previously reported cases. In the literature, we evidence that duplicate optic canal had been documented as an osteological study in dried human skulls and few conducted as a radiological study [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] (Table 2).…”

“…(%) Zoja et al (3) (1885) 5 6 Le Double et al (4) (1903) Case report 1 2 White et al (5) (1924) 161 3 3 1.86% Whitnell et al (6) (1932) Case report 1 1 Keyes et al (7) (1935) 2187 5 5 0.22% Warwick et al (8) (1951) Case report 1 2 Kier et al (1) (1996) 450 5 5 1.2% Lang et al (9) (1977) 3 4 Choudhry et al (2) (1988) Case report 3 5 Berlis et al (10) (1992) 80 2 2 2.5% Orhan M A et al (11) (1996) 369 2 3 0.54% Singh et al (12) (2005) 435 13 20 2.98 Math AC et al (13) (2010) 316 2 4 0.63% Patil GV et al (14) (2011) 400 11 14 2.75% Mahajan A et al (15) (2012) 96 1 1 1.04% Ghai R et al (16) (2012) 194 5 7 2.57% Shinde et al (17) (2013) 100 1 1 1% Swetha et al (18) (2014) 67 3 4 4.47% Vanitha et al (19) (2014)…”