7th June 2021

A 57-year-old presents to A&E

A 57-year-old presents to A&E. He tells you that a few hours ago he found himself unable to see out of his right eye. He describes this as being like “a black curtain was being pulled down over my eye, and then my sight went entirely on that side”. This lasted for around 10 minutes and has now resolved. 

What is the most appropriate first-line investigation?

Select the SINGLE most appropriate option from the list below. Select ONE option only.