Case study: diplopia and the alternate eye cover test

Apologies for not posting last week; I was away.

A 32 year old woman with relapsing-remitting multiple sclerosis (MS) presents with a 2 week history of horizontal double vision on looking to the right; the images were overlapping with the blurred or false image to the right.

Level 1

What and where is the lesion?

What is the alternate eye cover test?

What other clinical sign could this patient have and why?

Answers