SMOKING - 3-FOLD INCREASE RISK FOR CATARACT

Journal of Cataract & Refractive Surgery Volume 31, Issue 12 , December 2005, Pages 2395-2404
According to this article, which summarizes a literature review of smoking and the incidence of cataract:

"Evidence suggests that smoking has a 3-fold increase on the risk for incident nuclear cataract development. There was also evidence of reversibility of effect."