Get checked for cataracts. Your lenses normally yellow over the years, and one of the symptons of cataracts is double vision. I have had no problem with my artificial lenses; one of the best things that has happened to me, period.
Supposedly, there are eye drops from Russia that dissolves cataracts. No need to have surgery. http://findarticles.com/p/articles/mi_pwwi/is_200402/ai_mark2276828555