Paracentral acute middle maculopathy (PAMM) is a relatively new optical coherence tomography finding, defined by hyperreflectivity in the inner nuclear layer. In this article, we present a case of a 73-year-old woman who presented with transient vision loss followed by the sudden onset of complete vision loss to counting fingers at 1 foot for one day in the left eye. Dilated examination showed a right cotton wool spot, left pallid optic disc edema, and retinal edema in the distribution of the cilioretinal artery. OCT demonstrated hyperreflective band at the level of the inner nuclear layer, compatible with PAMM. Clinical and laboratory findings were consistent with GCA, for which she was prescribed high-dose oral prednisone, with confirmation of GCA on a subsequent temporal artery biopsy. PAMM may be seen in the context of GCA, and OCT of the macula serves as an important adjunct to define the retinal manifestations of this condition.