i had miller fisher variant GBS and blurred vision was my very first symtom and also the last to return to normal. I had blurred vision and was unable to move my eyes so had no peripheral vision. I was in hospital for 7 weeks and it was just at about 5 weeks i noticed i had some movement back. I still had double vision when i left hospital but that disappeared overnight about a week later. I think it all depends on how long the nerves take to repair … and with most things associated with GBS there is no way of knowing how long it could take. I had a referral to a neuro-opthamologist but didnt end up needing it. My eyesight is back to where it was pre-gbs (short sighted anyway!) although when i am tired i notice my pupils are irregular. I am due for an eye test so will be interesting to see if there are any other changes that could be attributed to gbs.
The problems with your vision can be so unsettling – it makes it hard to walk, read, watch tv – not to mention drive. SO many things we take for granted