I've found a layman's piece but there's more academic material too: http://www.allaboutvision.com/eye-exam/contrast-sensitivity.htm http://www.allaboutvision.c

I've found a layman's piece but there's more academic material too: http://www.allaboutvision.com/eye-exam/contrast-sensitivity.htm http://www.allaboutvision.com/eye-exam/contrast-sensitivity.... Also mentions that despite 20/20 vision from LASIK, contrast sensitivity may not return. I don't think we are alone :)