Top, photograph suggests subtle temporal pallor to the optic nerve in the right eye with a nerve fibre layer defect temporally (arrow, upper left); left eye appears normal (arrow, upper right) with no evident nerve fibre layer defect. Bottom, 3 months after discontinuing linezolid there is temporal pallor and nerve fibre layer defects in the right eye (lower left), again with no definite changes in the left eye (lower right).