A 52 year old healthy female presents to your office with a 4 day history of flashing lights (photopsia) and floaters in her left eye (OS). She also complains of a curtain-like defect in her field of vision OS.
On examination her visual acuity is 20/20 bilaterally. Visual field testing by confrontation was normal OD, but there was a nasal defect OS. Pupils were of equal size and constricted equally to light. Funduscopy was normal OD and had the following appearance OS.