A 68-year-old man was referred to the New England Eye Center neuro-ophthalmology clinic for evaluation of acute loss of vision in the left eye.
The patient reported that he first noted the loss of vision upon waking up in the morning 6 weeks before this visit. Since that time, there was some progressive worsening of vision. It felt like lace was covering his left eye.
The patient denied any trauma preceding the vision change. He did not have any eye pain, headache, temporal tenderness, jaw claudication, weight loss, joint pain, unexplained fever or chills. His ocular history was notable only