Current contact lens case hygiene guidelines of FDA involving with rubbing and cleaning with disinfecting solution and allow them to air dry with face down position.(http://www.fda.gov/downloads/ForConsumers/ConsumerUpdates/ucm048900.pdf. Accessed 2014/09/10 2008) But now there are very guidelines on air-drying location and position of the contact lens storage cases.(Y. T. Wu, Zhu, Willcox, et al. 2010a) Among optometrists there are still lots of discrepancies regarding recommendation about the case drying location and position. Some optometrists recommended contact lens cases be stored away from the toilet/ bathroom. Studies have shown that the aerosol effect of toilet flushing results in airborne bacteria and virus, it can settle down on
