Help. 42 year old Male. Sudden onset of Double Vision in Oct. 2007 (right eye muscles) had eyes fully tested. Went to Opthamologist. Got prism added to right eye - clear glasses. Double until Feb. 2008. All clear then - although far right vision still a bit double. All clear until holidays in August. New Opthamologist - same thing - no cause. (Had done MRI, bloods) Recently had appt. with Neurologist. Still no answers. New bloods - all clear. Seems to be better in morning. Poor after swimming. Can anyone shed any light? Getting very frustrated wearing glasses with prism. Trying to stay active, yet energy levels bit lower with Diplopia. What next?