On examination, her best-corrected visual acuity was 6/18 in the right eye and perception of light in the left eye. There was marked relevant afferent pupillary defect (RAPD) on the left side. The extraocular movements were normal. Anterior segment of both eyes showed moderate cataracts. The intraocular pressures in both eyes were within the normal range. The left optic disc was swollen on fundoscopy and the right disc was normal appearing with a cup to disc ratio of 0.3. The superficial temporal arteries were pulsatile and non-tender.