I have been on and off of lithium. When off, I am an avid reader. When on lithium, forever since '89, I read only professionally. I am sure it is a side effect of the drug but don't understand this. Anyone else with the same trouble? I can't concentrate on books on tape, so have mostly given up pleasure reading. I don't know if it impacts my concentration, light sensitivity to glare, or fine motor coordination of eye muscles...Book marks and colored transparencies don't help. Any suggestions? This is a minor side effect given the life saving benefits of lithium.