Double vision 12 months after LASIK - how to treat?

I had LASIK performed 11 months ago and my left eye has a very noticeable vertical doubling effect when reading text that has not reduced or gone away. No such issue exists in my right eye. When looking far left with both eyes I get extreme double vision, (it's clear when looking far right). This all makes driving VERY uncomfortable and is very troubling. My normal optician and the LASIK people just check that I can read the 20/20 line and say "welp, vision's great"... what can I do?!