A 46-year-old man presented with a 2-week history of a persistent blurred area in his right lower visual field of both eyes and colors surrounding the dark area that lasted 2 to 3 minutes at a time and occurred multiple times per day. His medical history was significant for dyslipidemia and he also reported feeling lethargic, with polydipsia and a dull mild holocephalic headache. What would you do next?