In a story by www.sciencedaily.com, a study suggests that some contact lens solutions do not properly disinfect against Acanthamoeba, a free-living organism in the environment that can cause a painful vision-threatening infection. Acanthamoeba are found in a variety of environmental sources including soil, freshwater, brackish water and seawater, as well as hot tubs and Jacuzzis. For details click: http://www.sciencedaily.com/releases/2009/07/090721091841.htm