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  West African Journal of Radiology
 

Figure 1: (a) Diagram showing the landmarks for the measurement of the optic nerve sheath diameter.[10] (b) An ocular sonogram of the right and left eyes of a 27-year-old participant showing how the measurement of the optic nerve sheath diameter was performed. AB is the distance (3 mm) from the globe of the eye to where the measurement was performed. CD is the optic nerve sheath diameter; 5.1 mm for the right and 5.3 mm for the left

Figure 1: (a) Diagram showing the landmarks for the measurement of the optic nerve sheath diameter.<sup>[10]</sup> (b) An ocular sonogram of the right and left eyes of a 27-year-old participant showing how the measurement of the optic nerve sheath diameter was performed. AB is the distance (3 mm) from the globe of the eye to where the measurement was performed. CD is the optic nerve sheath diameter; 5.1 mm for the right and 5.3 mm for the left