Persisting flickering, c-shaped defect of the visual field in both eyes

A 26 y/o multigravida female described a persisting, flickering, c-shaped defect of the visual field in both eyes. The patient reported that her vision was impaired immediately after an emergency cesarean section. During onset of spinal anesthesia, the patient developed bradycardia and hypotension treated with intravenous ephedrine (10 mg) and inadvertently epinephrine (1 mg) instead of atropine. BP >300/200 mm Hg, cardiac arrhythmia and angina developed. After immediate induction of general anesthesia, she gave birth to a healthy boy. The patient recalled that her vision was impaired immediately after surgery. She described a flickering, c-shaped defect of the visual field in both eyes. How will you identify this vision defect?

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It's a case of Acute macular neuroretinopathy usually seen after a Complicated Cesarean Section. Visual-field reports revealing paracentral visual-field defects, described as c-shaped by the patient Do Multifocal ERG,Spectral-domain optical coherence tomography (SD-OCT) of the macula.
Acute spasm of vessels leading to hypertension crisis which lead to decreased blood supply to the affected retina or optic radiation or cortical area off occipital lobe related with vision
Choridal infarction