Contact lenses (CLs) are a successful form of vision control, and the number of people wearing CLs has swelled to 85 million worldwide-32 million nationwide. Many CL wearers are unaware of the potential risks. The most serious complication of CL wear is sight threatening corneal ulceration caused by microbial keratitis (MK). An estimated 30,000 cases of MK occur annually in the US. The use of CLs, especially extended wear lenses, is a significant risk factor for MK. The American Academy of Ophthalmology states, """"""""High prevalence of inadequate CL disinfection, CL storage-case contamination, and contaminated CL solutions among CL users have been reported
